Project Description

CSM-T (Sodium bicarbonate)
Series  Air Classifier Mill

Adopting German technology, high-precision Air Classifier Mill, Sodium bicarbonate Desulfurization special technology, suitable for 325-5000 mesh (45μm-2.5μm).

  • Features:

    Simple and durable design, low investment and operating costs compared with other flue gas purification methods. It is possible to grind sodium bicarbonate (NaHCO3) with high efficiency at low temperature.

  • Applicable:

    Widely used in the field of dry gas purification.Gases contain acid substances such as SO2, HCl, etc. in waste gas generated by waste incineration, hazardous waste incineration, and toxic waste treatment in municipal waste disposal,  power plants, cement plants, ceramics, non-metallic mineral industries, glass manufacturing industries, steel mills etc.Deacidification by sodium bicarbonate will meet the requirements of environmental protection, with low cost and wider application.

For more information, please Email or call our 24-hour hotline.

[email protected]     0086-532-66983518

For more information, please Email or call our 24-hour hotline.

[email protected]



Unique Advantages

To achieve ultrafine, high purification, functional, intelligent, carbon reduction, energy conservation and environmental protection is the mission and responsibility that time has given us.

Dry process, save investment

Can remove more than 95% of SO2 and 99% of HCl in the exhaust gas, save investment.

Suitable for continuous operation

Annual operation time more than 8000 hours.Low failure rate, stable operation, less maintenance.

Integrated design of Grinding and Classifying

The ideal particle size could be obtained by adjusting rotate speed of classifying impeller.

Good grain shape, narrow particle size distribution

Containing classifying device, product particle size D90: 10-45 microns adjustable, good grain shape and narrow particle size distribution.

Large air volume inlet

The grinding temperature can be reduced, could also equip cold air device.

Cleaned online

Compact structure, the mill and fan are easy to be removed and washed, can be cleaned online, reducing downtime.

Clean and environmentally friendly

The whole system is sealed, with less dust, low noise, clean and environmentally friendly during production process.

PLC Program control

The control system is controlled by PLC program, easy to operate.

Working Principle

Creating the future of advanced materials with powder technology.

The Air Classifier Mill, Feeding system and draft Fan form a complete system. The grinding zone is formed by high-speed rotating grinding disc and gear ring, the material is grinded by the superposition of friction, shearing, collision and other grinding forces in the grinding zone, the grinded material moves to classifying area with rising airflow under the action of the fan pulling force.
In the classifying area, under the strong centrifugal force generated by the high-speed rotating classifying impeller, the coarse and fine materials are separated, the fine particle which meeting the particle size requirements could across classifier impeller and then enter flue gas pipeline, the coarse particle fall to grinding zone to continue grinding.

Use of Sodium Bicarbonate

Sodium bicarbonate (NaHCO3), used as an adsorbent for flue gas desulfurization, is sprayed into high-temperature flue gas directly, sodium bicarbonate decomposes at high temperature to form sodium carbonate Na2CO3, H2O and CO2. The newly produced sodium carbonate Na2CO3 has a high reactivity at the moment of formation, can efficiently react with acidic substances in the flue gas, remove more than 95% of SO2; the removal rate of HCl can reach 99%.

Principle of chemical reaction of sodium bicarbonate

NaHCO3 + HCl     →   NaCl  + H2O + CO2
2NaHCO3 + SO2 +  ½ O2   →   Na2SO4 + H2O + 2 CO2
NaHCO3 + HF    →    NaF  + H2O +  CO2

Characteristics of Sodium Bicarbonate Flue Gas Treatment

  • The process is simple and reliable;
  • The auxiliary (sodium bicarbonate) and the residue are non-irritating and non-toxic;
  • The residue is dry solid with a small amount;
  • Could adjust sodium bicarbonate input with the concentration of harmful substances;
  • Auxiliary costs are higher, but processing costs are low.

Product Atlas

From dots to planes, from detail to the whole, from product to management, and from consultation to compliant production, we have always insisted on the relentless pursuit of perfection and the courage to surpass ourselves.

Technical Parameters

Germany’s exquisite technology has been passed down and carried forward by us. Over 15 patents have enabled our products to lead the world.
Parameter / Model CSM-280T CSM-350T CSM-510T CSM-710T CSM-1100T CSM-1250T
Power(kw) Grinding Disc 7.5 11~15 22~30 45~55 90~110 132~160
Classifier Impeller 1.5 2.2 4~5.5 7.5~11 15 18.5~22
Feeder 0.55~1.1
Rotate Speed(r/min) Grinding Disc 7500 6200 4200 2800 2100 1700
Classifier Impeller 500~4500 500~4000 400~3000 300~2500 250~2000 200~1600
Feeder 20~100
Max. Air Volume(m3/h) 700 900 3000 5400 10000 15000
Product Size (um) 5~300 10~300
Capacity (kg/h) 2~100 10~400 15~600 30~1200 60~1500 300~3000

Note: The production capacity is closely related to the particle size, specific gravity, hardness, moisture and other indicators of the raw materials. The above is only for selection reference.

Related Engineering Case

More than 1,000 stories have been collected here. the next one, told by you.

Beijing a energy company, Sodium bicarbonate Desulfurizer, output 4-5T/H, particle size D95: 20μm, 3 sets of Air Classifier Mill Production Line.

Zhengzhou a aluminate plant, Sodium bicarbonate Desulfurizer, output 300-500KG/H, particle size D90: 20μm, 2 sets of Air Classifier Mill Production Line.

A well-known International Aluminate factory, Sodium bicarbonate Desulfurizer, output 150-200KG/H, particle size D95: 25μm, 5 sets of Air Classifier Mill Production Line.


Applications and Services

Equipment is the foundation, technology is the soul, and service is the guarantee.

Applicable materials

This equipment is suitable for ultra-fine grinding of non-metallic minerals (Mohs hardness less than 5), chemical, inorganic salts, pharmaceuticals, food, pigments, dyes, pesticides, battery materials, minerals, refractory materials and other raw materials.

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Customer Service

From your first call, to the next communication, inspection, testing, detection analysis, determining the product model and process flow, to complete equipment manufacturing, installation and commissioning, worker training and compliance production, we will ensure that every step is implemented in place. In order to make you a word-of-mouth communicator of ALPA products and services, we will spare no effort.

Product Parts

The parts service provided by ALPA has been servicing more than 1,000 customers for 18 years and has been proven by markets. The parts are shipped quickly, with full stock, good quality, low loss and long service life, ensuring the continuous and stable operation of your equipment.

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