Method for stabilizing/curing soluble phosphorus and fluorine in phosphogypsum
A phosphogypsum, soluble technology, applied in the direction of calcium/strontium/barium sulfate, etc., can solve the problems of reducing the moisture content of phosphogypsum, the harmless treatment of phosphogypsum is not thorough enough, high energy consumption, etc. , the effect of reducing moisture content
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[0037] Example 1:
[0038] A method for stabilizing / solidifying soluble phosphorus and fluorine in phosphogypsum. The treatment agent used includes calcium carbonate (CaCO 3 ), magnesium carbonate (MgCO 3 ), calcium hydroxide (Ca(OH) 2 ) And polydimethylsiloxane, characterized in that it comprises the following steps:
[0039] 1) Put the phosphogypsum in container A, under stirring, add water to container A, then add mixture A, and obtain mixture B after stirring;
[0040] The mixture A includes calcium carbonate, magnesium carbonate and calcium hydroxide;
[0041] The water content of the phosphogypsum is 20%-30%;
[0042] The weight ratio of the phosphogypsum to water is 1:2.5;
[0043] The weight ratio of the calcium carbonate, magnesium carbonate and calcium hydroxide is 1:1:1;
[0044] The weight ratio of the mixture A to phosphogypsum is 0.5:100;
[0045] In the stirring state: the stirring rate is 100 r / min.
[0046] 2) Under the stirring state, add the hydrophobic surfactant to the ...
Example Embodiment
[0057] Example 2:
[0058] A method for stabilizing / solidifying soluble phosphorus and fluorine in phosphogypsum. The treatment agent used includes calcium carbonate (CaCO 3 ), magnesium carbonate (MgCO 3 ), calcium hydroxide (Ca(OH) 2 ) And polydimethylsiloxane, characterized in that it comprises the following steps:
[0059] 1) Put the phosphogypsum in container A, under stirring, add water to container A, then add mixture A, and obtain mixture B after stirring;
[0060] The mixture A includes calcium carbonate, magnesium carbonate and calcium hydroxide;
[0061] The water content of the phosphogypsum is 20%-30%;
[0062] The weight ratio of the phosphogypsum to water is 1:2.5;
[0063] The weight ratio of the calcium carbonate, magnesium carbonate and calcium hydroxide is 1:1:1;
[0064] The weight ratio of the mixture A to phosphogypsum is 0.5:100;
[0065] In the stirring state: the stirring rate is 100 r / min.
[0066] 2) Under the stirring state, add the hydrophobic surfactant to the ...
Example Embodiment
[0078] Example 3:
[0079] A method for stabilizing / solidifying soluble phosphorus and fluorine in phosphogypsum. The treatment agent used includes calcium carbonate (CaCO 3 ), magnesium carbonate (MgCO 3 ), calcium hydroxide (Ca(OH) 2 ) And polydimethylsiloxane, characterized in that it comprises the following steps:
[0080] 1) Put the phosphogypsum in container A, under stirring, add water to container A, then add mixture A, and obtain mixture B after stirring;
[0081] The mixture A includes calcium carbonate, magnesium carbonate and calcium hydroxide;
[0082] The water content of the phosphogypsum is 20%-30%;
[0083] The weight ratio of the phosphogypsum to water is 1:2.5;
[0084] The weight ratio of the calcium carbonate, magnesium carbonate and calcium hydroxide is 1:1:1;
[0085] The weight ratio of the mixture A to phosphogypsum (0.5:100;
[0086] In the stirring state: the stirring rate is 100 r / min.
[0087] 2) Under the stirring state, add the hydrophobic surfactant to the co...
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