Generally, what is the difference between heavy alkalis and light ash?
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This post was last edited by chen-jun-1024 on 2011-12-15 09:52. What is the difference between heavy alkalis and light ash, as we usually refer to them? The chemical formula for light ash is Na2CO3; what is the chemical formula for heavy alkali?
The specific gravity of light soda ash is 0.5–0.6 g/ml, while that of heavy soda ash is 0.9–1.1 g/ml. They have the same molecular formula; heavy soda ash is obtained by further processing light soda ash through hydration and extrusion.
Reply to 1# wangyonggang301: The salt content also varies, especially in high-quality heavy ash.
Could you please explain in detail what equipment is used and how light ash is transformed into heavy ash?
Reply to 5# Chen Mo: The liquid-phase method involves passing the material through water and a crystallizer, followed by centrifugal separation, drying, packaging, and so on.
The specific gravity of light soda ash is 0.5–0.6 g/ml, while that of heavy soda ash is 0.9–1.1 g/ml. They have the same molecular formula; heavy soda ash is obtained by further processing light soda ash through hydration and extrusion； Furthermore, the particle sizes of heavy alkalis and light ash also differ. Light gray powder reacts with water in a hydration unit to produce monohydrate alkali at a certain temperature, which is then calcined to yield heavy alkali ； Light gray ash reacts with the mother liquor in the crystallizer to produce monohydrate alkali slurry, which is then dehydrated using a centrifuge before being sent for calcination to yield heavy alkali. Main equipment: hydrator (crystallizer), calcination furnace.