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Production process and system of calcium hydroxide

A technology of calcium hydroxide and production process, which is applied in the field of calcium hydroxide preparation, can solve the problems of many impurities, and achieve the effects of high utilization rate, high purity and whiteness

Active Publication Date: 2016-05-04
HUZHOU ZHEBAO METALLURGY AUX MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The current production of calcium hydroxide generally has the problem of many impurities

Method used

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  • Production process and system of calcium hydroxide
  • Production process and system of calcium hydroxide
  • Production process and system of calcium hydroxide

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific drawings and specific embodiments.

[0035] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0036] see figure 1 , a calcium hydroxide production process, it comprises the steps:

[0037] S100: Raw material processing: Vibrating the quicklime raw material and then pulverizing it to obtain quicklime powder; vibrating the quicklime raw material can disperse the quicklime raw material to facilitate the subsequent crushing treatment, and the quicklime powder obtained after the quicklime crushing treatment has a particle size The diameter is 1~10 microns;

[0038] S200: Digestion reaction: mix the quicklime powder and water evenly and completely to perform a digestion re...

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Abstract

The invention provides a production process of calcium hydroxide. The production process comprises the following steps that (1) raw material treatment, namely conducting vibration treatment on raw lime raw materials, and then crushing the raw lime raw materials to obtain raw lime powder; (2) slaking reaction, namely mixing the raw lime powder with water uniformly and completely to slake the raw lime powder, and then obtaining calcium hydroxide powder, wherein the slaking reaction comprises a first-order slaking reaction, a second-order slaking reaction and a third-order slaking reaction. According to the production process of the calcium hydroxide disclosed by the invention, a three-order slaking process is adopted, therefore, impurities of overburnt calcium oxide, underfired calcium carbonate, silica and the like contained in the raw materials are removed through multi-order slaking and filtering, finally the obtained calcium hydroxide has higher purity and whiteness, and the raw materials are higher in utilization rate.

Description

technical field [0001] The invention relates to the field of calcium hydroxide preparation, in particular to a production process and system of calcium hydroxide. Background technique [0002] Calcium hydroxide is a white powdery solid, the chemical formula is Ca(OH)2, commonly known as slaked lime, slaked lime, and the aqueous solution is called clarified lime water. Calcium hydroxide has the generality of alkali and is a binary strong base, but only Can be slightly soluble in water. Calcium hydroxide is widely used in production and life. You can use slaked lime mixed with sand to lay bricks and lime mortar to paint walls; paint lime slurry containing sulfur powder on trees to protect trees, prevent frostbite, and prevent pests from laying eggs; prepare compound soil; use lime milk and Bordeaux mixture with bactericidal effect is prepared as copper sulfate solution as pesticide. Change the acidity and alkalinity of the soil: adding an appropriate amount of slaked lime t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/08
CPCC04B2/08
Inventor 虞畅陈利民张晓锋孙巍玮李国群
Owner HUZHOU ZHEBAO METALLURGY AUX MATERIALS
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