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Application of high specific surface calcium hydroxide

February 13, 2023/in blog /by admin

Calcium hydroxide, also known as hydrated lime, is a highly versatile chemical compound that has a wide range of applications, particularly in the fields of construction, agriculture, and environmental management. One of its most important uses is in the form of high specific surface calcium hydroxide, which is characterized by its high surface area-to-volume ratio.

Waste water treatment

High specific surface calcium hydroxide is often used as a coagulant aid in wastewater treatment. It reacts with the impurities in the wastewater to form flocs, which are then removed by sedimentation or filtration.

Soil stabilization

High specific surface calcium hydroxide is also used to stabilize soil in construction projects. When added to soil, it reacts with the soil particles to form a solid matrix, which improves the strength and stability of the soil.

Remediation of contaminated soil

High specific surface calcium hydroxide can also be used to remediate contaminated soil by neutralizing acids and heavy metals.

Production of calcium carbonate

High specific surface calcium hydroxide is used as a starting material for the production of calcium carbonate through a process known as precipitation.

Air purification

High specific surface calcium hydroxide is also used to remove pollutants from the air, including sulfur dioxide and nitrogen oxides.

Pharmaceuticals

Calcium hydroxide is also used in the pharmaceutical industry as an ingredient in a number of over-the-counter medications, such as antacids and mouthwashes.

In conclusion, high specific surface calcium hydroxide is a highly versatile material with a wide range of applications in various fields. Its high surface area-to-volume ratio makes it an effective and efficient material for many industrial and environmental processes.

What is the manufacturing process of hydrated lime

February 6, 2023/in blog /by admin

Hydrated lime, also known as calcium hydroxide or slaked lime, is a fine white powder that is produced by mixing calcium oxide (quicklime) with water. The chemical formula of hydrated lime is Ca(OH)2.

Hydrated lime has several important properties, including high alkalinity, high reactivity, and good solubility in water. These properties make it useful in a wide range of industrial, agricultural, and environmental applications, including:

Water treatment: Hydrated lime is used to adjust the pH of water and remove impurities, such as heavy metals and organic matter.

Soil stabilization: Hydrated lime is added to soil to improve its stability, reduce plasticity, and increase compressive strength.

Flue gas treatment: Hydrated lime is used to remove sulfur dioxide and other pollutants from flue gases produced by power plants and industrial facilities.

Waste treatment: Hydrated lime is used to treat wastewater and solid waste to reduce odors, improve stability, and reduce pathogens.

Construction: Hydrated lime is used as a binding material in mortar and stucco and as a filler in paint and other products.

In addition to its industrial uses, hydrated lime is also used in food processing, pharmaceuticals, and other industries. Its production process mainly includes the following steps：

1. Limestone Quarrying: Limestone is quarried from the ground and transported to a plant for further processing.

2. Calcination: Limestone is calcined (heated) in a kiln to produce quicklime (calcium oxide). The temperature in the kiln is usually around 900 to 1,200°C.

3. Slaking: Quicklime is mixed with water in a reactor to produce hydrated lime (calcium hydroxide). The slaking process generates heat and can take several hours to complete.

4. Milling: The hydrated lime slurry is then milled to produce a fine powder. This can be done using various milling techniques, including ball milling, roller milling, and impact milling.

5. Classification: The milled hydrated lime powder is classified to separate particles of different sizes and remove any oversize particles.

6. Packaging: The hydrated lime powder is then packaged in bags or containers for transportation and storage.

The quality of hydrated lime is influenced by several factors, including the quality of the raw limestone, the efficiency of the calcination process, and the conditions during the slaking and milling processes. Hydrated lime is used in a variety of industrial, agricultural, and environmental applications, including water treatment, soil stabilization, and flue gas treatment.

How to Realize Automatic Production of Hydrated Lime Production Line

January 30, 2023/in blog /by admin

One of the commonly used processing equipment in the field of calcium powder processing is hydrated lime equipment. With the strong requirements of the environmental protection department for the powder processing industry to strictly prohibit dust pollution. From a single piece of equipment, it has developed into an entire calcium hydroxide production line that is basically automated from automatic lime feeding to automatic ash, automatic slag discharge, automatic dust collection, automatic powder selection, and automatic quantitative weighing and packaging.

The entire line It is environmentally friendly and labor-saving, which greatly reduces the operating cost of calcium powder processing. With the continuous development of science and technology, if we want to gain a firm foothold in the fierce market competition, we must increase the investment in science and technology. How to realize the automation of equipment has become a problem that manufacturers are very concerned about.

Assembly line industrial production will have more advantages in automated production. In fact, for the production of basic hydrated lime, if a relatively basic assembly line operation method can be achieved, the output of hydrated lime will also be improved. For the basic hydrated lime production line It is also necessary to realize basic automation. Of course, this needs to ensure the perfection of some core parts of the production equipment.

The use of hydrated lime equipment is also based on a relatively complete system for basic operations. For the production of basic calcium hydroxide, the current production equipment can already guarantee the output and quality. If the production of the equipment is more If it is perfect, there is basically no need for human operation. Of course, this requires the hydrated lime production line to have a complete drive system, transmission system, execution system, detection system, and control system. Five major systems.

1. Drive system. The driving system is the power source of the main machine, only with the driving system can the hydrated lime production line run.

2. Transmission system. Through the transmission device, the kinetic energy can be transmitted to each execution system, so that the execution system has kinetic energy, so that the purpose of transportation can be achieved, and the energy can also be transferred to the auxiliary system in the hydrated lime production line.

3. Execution system. The auxiliary steps and automation steps of the hydrated lime production line can be completed by starting the execution system.

4. Detection system. This link is a very critical link. We can ensure the accuracy of these parameters by testing the direction, speed, movement stroke, strength, and medium pressure and flow of the active machine of the hydrated lime production line, and then feed back the test results. For the control system, for inaccurate parameters, we can ensure the accuracy of the detection system by changing the parameters.

5. Control system. By using the control system, the drive system of the hydrated lime production line and the execution system of the transmission system can be controlled, so that the movement can be distributed to each execution system or auxiliary system.

The above is the relevant introduction about the automatic production of the hydrated lime production line. The five execution systems work in the corresponding order, so that the automatic production can be carried out better.

How much is calcium hydroxide production line

January 11, 2023/in blog /by admin

With the further development of the industry, the lime deep processing industry has a broad market prospect, and the professional lime deep processing production line is the equipment that helps the industry create value. Professional calcium hydroxide production line equipment, with the advantages of high efficiency and high output, environmental protection and noise reduction, helps calcium hydroxide grinding projects to create value.

So, what is the price of calcium hydroxide equipment? In fact, regarding the price of a complete set of calcium hydroxide production line, users first need to learn how to select equipment. Different project requirements have different matching production line plans. Therefore, the price of a complete set of calcium hydroxide production line will also vary.

The calcium hydroxide production line mainly includes a calcium hydroxide digestion system, a mill, a series of fine powder separators, and an integrated grinding system. Among them, the digestive system is an intelligent water distribution system, which adopts a dual dust removal system of pulse bag filter and water dust removal to achieve efficient dust removal. Rapid hot water ash can speed up digestion and milling rate. The pulverizer is a large-scale grinding equipment, which can be reused, improved efficiency, and reduced costs. The fine air separator has high powder selection and cleanliness, and the energy saving effect is remarkable, which can greatly improve the output and whiteness of the mill system.

The digester system is mainly a device for digesting quicklime into slaked lime powder, and can also digest quicklime into lime milk. The main principle of the slaked lime digester is that after the spraying device sprays water to the quicklime in the digester according to a certain amount of water supply, the quicklime is strongly stirred in the mixing tank by the rotation of the wear-resistant stirring blade and gradually melted, digested, matured, Homogenization. Digester has the following industry advantages.

1. Precise water distribution system

This system will carry out computerized precise water distribution according to the specific gravity of quicklime entering, which completely solves the problem of continuous water distribution by the water distribution valve under the conditions of uneven feeding, intermittent feeding, and stop feeding.

2. Automated production

Adopt PLC automatic control, get rid of some disadvantages of the original manual control, strengthen the quality control ability, and greatly improve the product quality.

3. Environmental protection

The complete system is produced under negative pressure and is equipped with a pulse dust collector.

I will share with you the price of calcium hydroxide production line here. In fact, the price of large, medium and small calcium hydroxide production lines is based on the output and fineness of calcium hydroxide to be produced as a reference, and the obtained configuration list is summarized and quoted. The output is different, the configuration is different, and the price is also different.

What are the equipment components of hydrated lime production line

January 6, 2023/in blog /by admin

Hydrated lime is relative to quicklime. It is a common white calcium hydroxide substance with strong corrosiveness. According to the characteristics of the mine, it is mainly used in construction, metallurgy, building materials, mining and other fields.

Hydrated lime production line is a professional production line for special treatment of this substance. In order to improve the comprehensive utilization rate of this substance, it is a reasonable choice for us to choose a production line to process it. So what are the main equipment required for a complete set of hydrated lime production line?

Hydrated lime processing production line hardware composition

There are many processing techniques for hydrated lime. According to the properties and characteristics of the material, we need to use jaw crusher, Raymond mill, rotary kiln and other equipment.

The following three types of equipment are analyzed in detail:

1. Jaw Crusher

This equipment is a very common crushing equipment, which is suitable for many types of materials, so it is very reasonable to use it to process hydrated lime. It can effectively filter out impurities in the material, thereby improving its purity and reducing the content of impurities. , so the equipment is favored and recognized, so it is one of the important components for processing hydrated lime.

2. Raymond mill

Since hydrated lime is a non-metallic mineral, users will also choose Raymond mill for secondary treatment. This equipment has been greatly improved in terms of function through continuous improvement and innovation. During the processing of hydrated lime, The advantage shown is that the production capacity is large, so its output and production capacity will be higher.

3. Rotary kiln

In addition to crushing and grinding, calcination of hydrated lime is also a common processing method, and the equipment to realize the calcination process is the rotary kiln. The new generation of rotary kiln has a very high technological content, and the operation is simpler and more energy-saving. Environmental protection, low energy consumption, this move is in line with the concept of environmental protection, and has been highly recognized by the industry.

Advantages and characteristics of hydrated lime processing production line

1. Rationalized structure: Its structure is very novel, and the overall layout is particularly reasonable, which provides a solid hardware foundation for the smooth operation of the equipment, so it can exert more advantages.

2. Simplified operation: In order to further reduce the difficulty of operation and use of the equipment, we have carefully designed it, so it has a high degree of automation, and it will become easier for users to use.

3. Reasonable price: Only a reasonable price can effectively increase its sales volume, and at the same time enhance its market competitiveness. Our price is relatively reasonable, and it is also more affordable compared with other manufacturers.

About the equipment composition of the hydrated, I will introduce it to you here. I hope to help you better. We are a professional manufacturer of hydrated lime equipment and look forward to your letter of consultation!

Hydrated lime equipment process flow

December 26, 2022/in blog /by admin

The technological process of the hydrated lime equipment is to add the raw quicklime from the loader to the silo, evenly add it to the jaw crusher through the vibrating feeder, and crush it to about 30-50 mm. The dust generated during the crushing process of the equipment is introduced into the pulse bag filter outside the workshop by the induced draft fan through the dust cover of the jaw crusher. The calcium oxide powder of the filter should be cleaned once a week.

Hydrated lime equipment adopts a double-shaft stirring structure, which has multiple functions such as stirring, crushing and agglomeration, and self-cleaning. Its unique paddle and stirring formula make quicklime and water mix evenly, react fully, and play a role in the agglomeration generated during the reaction.

The feed port of the digester is designed with a screw feed propeller to facilitate material transportation. In order to prevent the backflow of dust generated during the digestion process, the equipment is equipped with a special steam and dust discharge port, which can be discharged to a special dust removal system through a connecting pipe, and is used with DMC pulse dust removal Q device in conjunction with hydrated lime equipment, which can handle quicklime well dust and harmful gases produced during digestion. Waste dust and lime can be reused after use, and the environment has no dust pollution, which meets the requirements of environmental protection development.

The quicklime crushed by the hydrated lime equipment is lifted by the bucket elevator to the lime bin at the upper part of the digestion tank in the digestion workshop. The quicklime is evenly sent into the digester through the gate valve at the lower part of the lime silo and the weighing feeder (feeding speed is 5t/h). At the same time, water was added to the digester at a ratio of 133603.5 (17.5 m3/h). When the boiler is started, the hot water heated to 80 degrees in the hot water tank can be used in a few minutes (the heating medium of the hot water tank is saturated steam). When the temperature of the digester reaches above 90 degrees, the hot water in the hot water tank can be stopped and digested with cold water (circulating water can be used).

Quicklime and water can enter the digestion tank under the high-intensity stirring of the stirring blades for digestion reaction, and synthesize calcium hydroxide emulsion through hydration. Most of the residue of the hydrated lime plant is sieved through the slag outlet of the digester and the vibrating screen. The slag output is 1642.6Kg/h, and the residue is sent to the slag pool outside the workshop through the conveyor. The water vapor generated during the digestion process is collected by the dust removal hood at the end of the digester and discharged outside the workshop, and then discharged after being treated by the water film dust collector.

The filtered coarse stock flows into the coarse stock tank, and the slurry in the coarse stock tank is pumped into the rotary slag discharger by the slurry. The insoluble ash (120kg/h) separated by the rotary slag remover is sent to the slag pond outside the workshop after being separated by a vibrating screen.

In fact, the mud processed by the hydrocyclone of the hydrated lime production line is about 22% (the flow rate is about 25m/h), and it enters the refined mud storage tank, and water is added to make the calcium hydroxide content reach 20%. Then it is pumped into the cyclization tower at a flow rate of 60m/h. In order to better meet the requirements of the cyclization process, the refined pulp storage tank of the hydrated lime equipment can be heated to 65 degrees for heat preservation, and the heating medium is saturated steam.

What are the cleaning methods of hydrated lime equipment?

November 2, 2022/in blog /by admin

During the long-term use of hydrated lime equipment, a lot of dust will accumulate. If it is not cleaned in time, the dust will gradually accumulate in the equipment. Over time, it will not only increase energy consumption, reduce the quality of production products, but also affect the capacity of the equipment, and even cause Its explosion endangers the safety of personnel and equipment.

Cleaning method

1. Chemical cleaning: First of all, it is necessary to know the scale composition in the hydrated lime equipment, and it should be sampled and analyzed. After determining the composition of the dirt, do the test first, select the cleaning agent and confirm through the test that it will not cause corrosion to the metal of the equipment. Then, a temporary circulation device is erected on site to circulate the cleaning fluid in the equipment to wash off the dirt.

2. Mechanical cleaning: high-pressure cleaning device is used, and the high-pressure water of 150-200mpa is used to wash away the dirt through the nozzle.

Matters needing attention

1. The types of pollutants should be understood, and appropriate cleaning methods should be selected in a targeted manner. It should be noted that solvent washing, including solvent vapor degreasing, ultrasonic cleaning, and water-based cleaning agents, are commonly used methods for removing contaminants such as grease and wax. Chemical cleaning such as lye, acid etching, etc. is used to remove such as paint, carbon deposits or other contaminants that cannot be removed by solvent removal and chemical cleaning.

2. The influence of the selected washing method on the performance and use of the hydrated lime equipment should be understood. The selected cleaning method must not damage the sealing surface of the kettle body and lid, and prevent the equipment from being badly used.

3. The practicability of the selected cleaning method should be understood. For example, the cleaned slaked lime equipment is too large and cannot be placed in the ultrasonic tank for cleaning.

In short, the cleaning of the slaked lime production line is very important, which not only ensures the service life of the equipment, but also improves the quality of the product. Therefore, it is necessary to carry out regular cleaning of the equipment, and at the same time, pay attention to the above mentioned.

Introduction to the process flow of hydrated lime equipment

October 12, 2022/in blog /by admin

The technical process of the lime equipment is to add raw quicklime from the loader to the silo, evenly add it to the jaw crusher through the vibrating feeder, and crush it to about 30-50 mm. The dust generated during the crushing process of the equipment is introduced into the pulse bag filter outside the workshop by the induced draft fan through the dust cover of the jaw crusher, and the calcium oxide powder of the dust collector should be cleaned once a week.

The hydrated lime equipment adopts a double-shaft stirring structure, which has various functions such as stirring, crushing and agglomeration, and self-cleaning. Its unique paddle and stirring formula make the quicklime and water mix evenly, the reaction is sufficient, and it plays a role in the agglomeration generated during the reaction.

Hydrated lime equipment

The feed port of the digester is designed with a screw feed propeller to facilitate material transportation. In order to prevent the backflow of dust generated in the digestion process, the equipment is equipped with a special discharge port for steam and dust, which can be discharged to a special dust removal system through connecting pipes, and is used in conjunction with the DMC pulse dust removal Q device with the hydrated lime equipment, which can handle quicklime well. Dust and harmful gases produced during digestion. Waste dust and lime can be reused after use, and the environment has no dust pollution, which meets the requirements of environmental protection development.

The quicklime crushed by the hydrated lime equipment is lifted by the bucket elevator to the lime silo at the upper part of the digestion tank in the digestion workshop. The quicklime is evenly fed into the digester through the plug-in valve at the lower part of the lime silo and the weighing feeder (the feeding speed is 5t/h). At the same time, water was added to the digester at a ratio of 133603.5 (17.5 m3/h).

When the boiler is started, the hot water heated to 80 degrees in the hot water tank can be used in a few minutes (the heating medium of the hot water tank is saturated steam). When the temperature of the digester reaches above 90 degrees, the hot water in the hot water tank can be stopped and digested with cold water (circulating water can be used).

Quicklime and water can enter the digestion tank for digestion reaction under the high-intensity stirring of the stirring blade, and synthesize calcium hydroxide emulsion through hydration. Most of the residue of the hydrated lime equipment is 1642.6Kg/h sieved through the slag outlet of the digester and the vibrating screen, and the residue is sent to the slag pool outside the workshop through the conveyor.

The water vapor generated during the digestion process is collected by the dust hood at the end of the digester and discharged to the outside of the workshop, and then discharged after being treated by the water film dust collector.

The filtered coarse pulp flows into the coarse stock pool, and the slurry in the coarse stock pool is pumped into the rotary slag discharger from the slurry. The insoluble ash (120kg/h) separated by the rotary slag remover is separated by the vibrating screen and sent to the slag pool outside the workshop.

The above is all about the process flow of hydrated lime equipment. In fact, the mud treated by the hydrocyclone of the hydrated lime production line is about 22% (the flow rate is about 25m/h), and it enters the refined mud storage tank, and water is added to make the calcium hydroxide content reach 20%. Then it is pumped into the cyclization tower at a flow rate of 60m/h. In order to better meet the requirements of the cyclization process, the refined pulp storage tank of the hydrated lime equipment can be heated to 65 degrees for heat preservation, and the heating medium is saturated steam.

What are the characteristics of the environmentally friendly calcium hydroxide production line?

September 28, 2022/in blog /by admin

With the development of society, the requirements of environmental protection for various industries are getting higher and higher. For calcium hydroxide production enterprises, the requirements for environmental protection are also improved. We know that the current production of calcium hydroxide is generally It is completed by using a complete calcium hydroxide production line, and for the current new calcium hydroxide equipment, the configuration is relatively complete, and the requirements for environmental protection are also improved a lot.

At present, the demand for calcium hydroxide calcium powder in society is relatively large. The calcium hydroxide production line is determined by the dry production process of calcium hydroxide equipment used for calcium hydroxide calcium powder. Ca The main advantage of the dry process of calcium hydroxide equipment is that it can achieve fully automatic production, the production process is environmentally friendly, the output is large, the quality is stable, the calcium hydroxide product produced has no impurities, good activity and other advantages, a wide range of use, convenient storage and transportation.

The traditional calcium hydroxide production line has low production efficiency, high energy consumption, and a large amount of flue gas emissions. Therefore, as equipment manufacturers, they are actively innovating, and all the supernatural powers are developing calcium hydroxide equipment in the direction of energy-saving production. The environmentally friendly calcium hydroxide production line produced by our company has been accumulated for a long time in actual use, and customers have really felt it. Advantages of using environmentally friendly calcium hydroxide production line.

1. Produce diversified products to meet the needs of customers in various industries. The environmentally friendly calcium hydroxide production line we use can produce calcium hydroxide with specifications of 3T/h, 6T/h, 10T/h, 15T/h, and 20T/h. These calcium hydroxide specifications meet the needs of most customers. This also increases our customer base.

2. Environmentally friendly calcium hydroxide production line has less flue gas emissions and is a very energy-saving and environmentally friendly production equipment. This is in line with what our country advocates and is supported by the government.

3. The degree of mechanization of the environmentally friendly calcium hydroxide production line is increased, and many processes are controlled by computers, which reduces the disadvantages of manual control. Skilled workers can produce more standard products, but the products produced by new workers are not standard enough, which leads to inconsistent products. The computer-controlled production line is not greatly affected by the proficiency of the workers, and is a standardized product. Such a production line is very suitable for the current society: labor costs increase, and employee mobility is strong.

4. Environmental protection calcium hydroxide production line energy saving. Using an environmentally friendly calcium hydroxide production line to produce calcium hydroxide can save 17% of electricity compared to using a traditional calcium hydroxide production line to produce the same calcium hydroxide. In this way, the production cost of calcium hydroxide is reduced. When everyone is still using traditional calcium hydroxide production lines, the profits of enterprises using environmentally friendly calcium hydroxide production lines have increased. Conversely, if everyone uses environmentally friendly calcium hydroxide production lines, those companies that are still using traditional calcium hydroxide production lines will be eliminated.

The above is all the introduction of the characteristics of the environmentally friendly calcium hydroxide production line. Compared with the traditional equipment, the environmentally friendly equipment will be more cost-effective and can effectively improve the production efficiency.

Production process and precautions of calcium hydroxide equipment

September 15, 2022/in blog /by admin

Calcium hydroxide equipment, also known as calcium hydroxide production line, is mainly used for the production of calcium hydroxide. With the increasing application of calcium hydroxide in industrial production, calcium hydroxide equipment has also been upgraded many times. There has been a qualitative change from performance to product. For the production process of calcium hydroxide equipment, everyone is not very clear, so in response to this problem, calcium hydroxide equipment manufacturers give you the following detailed introduction.

The production process of calcium hydroxide equipment

1. Pulverized calcium oxide

During production, the raw material calcium oxide (CaO) needs to be added into the silo, and then added to the jaw crusher evenly through the vibrating feeder, and crushed to a particle size of about 40 mm. The dust generated during the crushing process will be introduced into the pulse dust collector outside the workshop through the dust cover of the crusher through the induced draft fan. It is recommended to clean the calcium oxide powder in the dust collector once a week.

2. Digestive reaction

The crushed calcium oxide is lifted to the digester by the bucket elevator for digestion reaction. Calcium oxide needs to enter the first-level digester for preliminary digestion. When the primary digestion is completed, it will enter the second-level digestion or the third-level digester, so that the calcium oxide can be fully digested and decomposed to generate qualified calcium hydroxide primary products. Can reach 98%.

The feed port of the digester is designed with a screw feed propeller to facilitate material transportation. Most of them adopt a double-shaft stirring structure, which has the functions of stirring, crushing agglomeration and self-cleaning. Its unique paddle and stirring formula can make calcium oxide and water fully and evenly mixed together, the reaction is more complete, and it plays a role in the agglomeration generated during the reaction.

3. After decomposing, send it to the classifier

The digested and decomposed calcium hydroxide is then sent to the classifier by the semi-finished product screw conveyor, and the product impurity separation and fineness classification are completed by the powder classifier, and the final qualified product after the classification is completed. Calcium hydroxide tanks are packaged separately.

Precautions for the use of calcium hydroxide equipment

1. Before using calcium hydroxide equipment, it is necessary to check the equipment first to confirm that the voltage and other parameters are normal, and it can be used after there is no fault.

2. During the operation of the equipment, pay attention to observe the operation of the equipment at any time, and stop it in time if any abnormality is found, especially not to overload the equipment.

3. After the equipment is used and shut down, remember to do a good job in cleaning and maintenance, and add lubricating oil in time for the next use.

Regarding the production process of calcium hydroxide equipment and precautions for use, the above is the relevant introduction brought by Xiaobian. I hope it can help you understand calcium hydroxide equipment.