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METHOD FOR PREPARING POTASSIUM NITRATE USING WASTE ETCHING SOLUTION, WHICH IS ABLE TO CHEAPLY PRODUCE POTASSIUM NITRATE
METHOD FOR PREPARING POTASSIUM NITRATE USING WASTE ETCHING SOLUTION, WHICH IS ABLE TO CHEAPLY PRODUCE POTASSIUM NITRATE
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机译:利用废物蚀刻溶液制备硝酸钾的方法,该方法可以廉价地生产硝酸钾
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摘要
PURPOSE: A method for preparing potassium nitrate using waste etching solution is provided to obtain industrial potassium nitrate of high purity.;CONSTITUTION: A method for preparing potassium nitrate using a waste etching solution comprises: a step of removing insoluble particle ingredients in the waste etching solution; a step of heating a pure etching solution at high temperature under the compressive condition; a step of isolating into mixed acid gas and phosphoric acid solution; a step of cooling mixed acid gas to convert to mixed liquid; a step of adding potassium hydroxide to generate potassium nitrate; a step of preparing mixture solution containing acetic acid and potassium nitrate; a step of heating the mixture solution at high temperature under the compressive condition to separate evaporated acetic acid and liquid potassium nitrate; a step of cooling liquid potassium nitrate to obtain solid potassium nitrate; and a step of performing dehydration to separate liquid potassium nitrate and solid potassium nitrate.;COPYRIGHT KIPO 2011
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