Method for producing potassium chlorate from calcium carbide waste residues

Abstract

The invention relates to a method for producing potassium chlorate from calcium carbide waste residues. The method comprises the following steps: by taking calcium carbide waste residues as raw materials, adding water into the calcium carbide waste residues to prepare an emulsion, pumping the emulsion into a reaction kettle, continuously stirring, introducing chlorine and oxygen, stirring for reacting, performing press-filtering with a filter press after the reaction is over, removing filter residues, keeping filtrate, adding potassium chloride into the solution, continuously stirring, filtering, and drying the filtering residues to obtain potassium chlorate. By using the method, a great amount of calcium carbide waste residues can be consumed, so that the land occupation pressure caused by piling can be relieved, and the environment pollution can be decreased; and the waste recycling can be realized.

Description

technical field

[0001] The invention relates to the technical field of chemical raw material production, in particular to a method for producing potassium chlorate from calcium carbide waste residue. Background technique

[0002] Calcium carbide slag is the waste residue mainly composed of calcium hydroxide after hydrolysis of calcium carbide to obtain acetylene gas. At present, the main way to deal with calcium carbide residue is sea reclamation and ditch filling. Some factories built in coastal or mountainous areas have always discharged calcium carbide residue directly into seawalls or valleys. Sea reclamation and ditch filling are regularly stacked, and there is no prevention seepage treatment. This method covers a large area and causes serious pollution. The second is to use calcium carbide waste slag as an auxiliary material to produce cement, mix it with sandstone and clay slurry to make cement raw meal, and use a rotary kiln to calcinate cement. Contents of the i...