Method for preparing calcium phosphate by utilizing slag charge discharged during sodium hypophosphite preparation
A technology of calcium phosphite and sodium hypophosphite, applied in the chemical industry, can solve problems such as environmental pollution and energy consumption, and achieve the effects of less investment in equipment, solving environmental pollution, and reasonable utilization of resources
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[0044] Below in conjunction with accompanying drawing 1 and attached figure 2 Examples illustrating, but not limited to, the invention are as follows:
[0045] See attached picture 1:
[0046] In Figure 1, point A calcium dihydrogen phosphite monohydrate Ca(H 2 PO 3 ) 2 ·H 2 O solid phase formation point, B point calcium phosphite monohydrate CaHPO 3 ·H 2 o
[0047]The solid phase forms a point, the point E monohydrate calcium phosphite and the monohydrate calcium phosphite co-saturated solution form a point, the curve of the saturated solubility of the line segment ME monohydrate calcium phosphite salt; the line segment DE monohydrate calcium phosphite Salt saturation solubility curve; ΔAME monohydrate calcium dihydrogen phosphite salt crystallization region, ΔEBD monohydrate calcium salt crystallization region, ΔEAB monohydrate calcium phosphite and monohydrate calcium salt crystallization of two calcium salts Area.
[0048] Below with the slag material that produce...
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