Preparation method of barium hydroxide
A barium hydroxide and manganese monoxide technology, applied in the direction of calcium/strontium/barium oxide/hydroxide, etc., can solve the problems of long reaction time at high temperature, high cost, high energy consumption, etc., and achieve low cost and simple method , producing a clean effect
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[0041] The present invention will be further described below in conjunction with embodiment:
[0042] The present invention uses manganese dioxide and air as an oxidant to circulate and oxidize barium sulfide to prepare barium hydroxide, which comprises the following steps:
[0043] (1) Use coal to reduce barite at 800°C to 1300°C to generate barium sulfide;
[0044] (2), use slag washing water to leach barium sulfide at 60°C-95°C, leaching and filtering to obtain barium sulfide mother liquor, adjust the temperature of barium sulfide mother liquor to 30°C-70°C, and the concentration is 50g / L-150g / L ; The filter residue is washed with hot water, and the obtained washing water is recycled for leaching barium sulfide;
[0045] (3), oxidize the prepared barium sulfide mother liquor with manganese dioxide to generate barium hydroxide, sulfur, manganese monoxide, filter and separate, the filtrate is the barium hydroxide mother liquor, and the filter residue is a solid mixture of su...
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