Leaching equipment for producing potassium sulfate by using metallurgy dust mud

Abstract

The invention discloses leaching equipment for producing potassium sulfate by using metallurgy dust mud. The equipment comprises a base, a first supporting base and a second supporting base are fixedly arranged at the upper end of the base, and a leaching kettle is fixedly installed at the upper end of the first supporting base and comprises a first cylindrical structure at the upper end and a first spherical structure at the lower end; a feeding hopper is fixedly arranged on the side wall of the leaching kettle, a through hole is formed in the upper end of the leaching kettle, a sealing ballis movably arranged in the through hole, a buffer is fixedly connected to the upper end of the leaching kettle, and a supporting rack is fixedly connected to the outer side wall of the leaching kettle. According to the leaching equipment, a sulfuric acid solution can be controlled to flow into the leaching kettle intermittently, and the situation is avoided that a large amount of sulfuric acid isadded at a time, the local heat is too high, and accordingly the leaching rate of a potassium element is influenced; the leaching rate is guaranteed, sediment in the solution can be sufficiently filtered and adsorbed, the colors of other metal ions are eluted, it is guaranteed that potassium sulfate crystals which are prepared in the later period are better in color and luster, and the equipment is more convenient to use.

Description

technical field [0001] The invention relates to the technical field of metallurgical dust, in particular to a leaching device for producing potassium sulfate by using metallurgical dust. Background technique [0002] Metallurgical dust sludge is dust and slurry with iron as the main component that is removed from the dust removal system of different production processes in the process of iron and steel production. Usually, it is generally collected by dry dust collectors and is called dust, which is collected by wet dust collectors. What is collected is called mud, which mainly includes solid waste such as sintering dust, ironmaking dust, steelmaking dust and steel rolling oxide scale, which is huge in quantity and serious in pollution. At present, the dust and sludge mainly treated by returning to sintering often contain harmful elements such as zinc, lead, and potassium, which seriously affect the quality of sintering ore. [0003] Potassium, a harmful element, occupies a...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the existing metallurgical dust and mud potassium element recovery in the prior art, usually adding a large amount of sulfuric acid at one time, resulting in excessive local heat affecting the leaching rate of potassium element, and using a layer of activated carbon layer when filtering the leachate Adsorption and decolorization are not complete, and the produced potassium sulfate will still retain the color of other metal ions, which will affect the use of the problem. A leaching equipment for producing potassium sulfate using metallurgical dust is proposed

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