In soda ash production, what is the main component of the light ash collected from the calciner flue gas?
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In soda ash production, what is the main component of the light ash collected from the calciner off-gas?
Main components: sodium carbonate, sodium bicarbonate. 1# steinback
Sodium carbonate and soda ash simply have different particle sizes
It can also be used as a product; for example, the light ash coming from the cyclone separator is ultimately returned to the alkali feed screw. Differences between light ash and heavy soda ash: Heavy soda ash: Characteristics: It is a white, granular anhydrous substance that is readily soluble in water. When exposed to air at room temperature, it absorbs CO2 and water, releasing heat in the process; it gradually transforms into NaHCO3 and forms lumps. Molecular formula: Na2CO3
Specifications:
Total alkali content (expressed as Na2CO3) ≥ 99.2%
Chlorides (expressed as NaCl) ≤ 0.25–0.4%
Iron (expressed as Fe2O3) ≤ 0.004%
Insoluble matter in water ≤ 0.04%
Loss on ignition ≤ 0.5%
Bulk density (kg/m³): 900–1000
Uses:
One of the important basic chemical raw materials. It is widely used in fields such as chemical engineering, metallurgy, national defense, textiles, dyeing and printing, food, glass, enamel, pharmaceuticals, and papermaking. Production method:
(1) Ammonia-soda process (Solvay process)
Using crude salt and limestone as raw materials, light soda ash is produced through chemical synthesis; heavy soda ash is then produced via solid-phase hydration. (2) Natural soda ash method
Using natural soda ash as raw material, heavy-duty and light-duty soda ash are produced through evaporation or carbonation methods. Characteristics of light-duty soda ash: It appears as a white powder or fine granular crystals; it is anhydrous, readily soluble in water, and its aqueous solution is alkaline. At room temperature, when exposed to air, it absorbs CO2 and water while releasing heat, gradually transforming into NaHCO3 and forming lumps. Molecular formula: Na2CO3
Specifications:
Total alkalinity (expressed as Na2CO3) ≥ 99.2%
Chlorides (expressed as NaCl) ≤ 0.25–0.4%
Iron (expressed as Fe2O3) ≤ 0.004%
Insoluble matter in water ≤ 0.04%
Loss on ignition ≤ 0.5%
Bulk density (kg/m³) ≤ 500–600
Uses:
One of the important basic chemical raw materials. It is widely used in fields such as chemical engineering, metallurgy, national defense, textiles, dyeing and printing, food, glass, enamel, pharmaceuticals, and papermaking. Production method: (1) Ammonia-soda process (Solvay process) Using crude salt and limestone as raw materials, light soda ash is produced through chemical synthesis. (2) Natural soda process: Using natural soda as raw material, light soda ash is produced through evaporation or carbonation.
Specifications:
Total alkali content (expressed as Na2CO3) ≥ 99.2%
Chlorides (expressed as NaCl) ≤ 0.25–0.4%
Iron (expressed as Fe2O3) ≤ 0.004%
Insoluble matter in water ≤ 0.04%
Loss on ignition ≤ 0.5%
Bulk density (kg/m³): 900–1000
Uses:
One of the important basic chemical raw materials. It is widely used in fields such as chemical engineering, metallurgy, national defense, textiles, dyeing and printing, food, glass, enamel, pharmaceuticals, and papermaking. Production method:
(1) Ammonia-soda process (Solvay process)
Using crude salt and limestone as raw materials, light soda ash is produced through chemical synthesis; heavy soda ash is then produced via solid-phase hydration. (2) Natural soda ash method
Using natural soda ash as raw material, heavy-duty and light-duty soda ash are produced through evaporation or carbonation methods. Characteristics of light-duty soda ash: It appears as a white powder or fine granular crystals; it is anhydrous, readily soluble in water, and its aqueous solution is alkaline. At room temperature, when exposed to air, it absorbs CO2 and water while releasing heat, gradually transforming into NaHCO3 and forming lumps. Molecular formula: Na2CO3
Specifications:
Total alkalinity (expressed as Na2CO3) ≥ 99.2%
Chlorides (expressed as NaCl) ≤ 0.25–0.4%
Iron (expressed as Fe2O3) ≤ 0.004%
Insoluble matter in water ≤ 0.04%
Loss on ignition ≤ 0.5%
Bulk density (kg/m³) ≤ 500–600
Uses:
One of the important basic chemical raw materials. It is widely used in fields such as chemical engineering, metallurgy, national defense, textiles, dyeing and printing, food, glass, enamel, pharmaceuticals, and papermaking. Production method: (1) Ammonia-soda process (Solvay process) Using crude salt and limestone as raw materials, light soda ash is produced through chemical synthesis. (2) Natural soda process: Using natural soda as raw material, light soda ash is produced through evaporation or carbonation.