Preparation method of plate frame type poly(aluminium chloride)

A polyaluminum chloride, plate and frame technology, applied in the chemical industry, can solve problems such as high water content, unstable product quality, and limited application range, achieve low processing costs, improve labor intensity and working conditions, and be easy to operate Effect

Inactive Publication Date: 2015-03-25
SHANDONG RUNDE WATER PURIFICATION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0002] In the prior art, the production method of polyaluminum chloride has the following disadvantages: one is that the selected raw materials are conventional chemical raw materials, resulting in high manufacturing costs; the other is that the product quality is unstable; The scope of application is very limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] Example: Add 60 parts of bauxite to 100 parts of hydrochloric acid with a content of 28%, gradually raise the temperature to 80°C and react for 10 hours, then add 50 parts of calcium aluminate powder and react for 1.5 hours at a temperature of 90°C. The pressure is 15 kg / cm2 for pressure filtration, and the finished product enters the pool.

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PUM

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Abstract

The invention discloses a preparation method of plate frame type poly(aluminium chloride). The preparation method is characterized in that the plate frame type poly(aluminium chloride) is prepared from the following raw materials in parts by weight: 100 parts of 30 percent hydrochloride, 50-80 parts of bauxite and 30-50 parts of calcium aluminate powder, wherein in the bauxite, the content of aluminum oxide is not less than 30 percent, and the content of ferric oxide is not larger than 4 percent; in the calcium aluminate powder, the content of aluminum oxide is not less than 50 percent, the content of calcium oxide is 28-32 percent, and the content of ferric oxide is 1-2.5 percent. The preparation method of the plate frame type poly(aluminium chloride) comprises the following steps: diluting hydrochloride by 19-26 percent, putting the bauxite according to the proportion, raising the temperature by 40-80 DEG C, carrying out reaction for 10h, putting the calcium aluminate powder, carrying out reaction for 1.5-2h at the temperature of 60-90 DEG C, and carrying out pressure filtration with the pressure of a plate frame to be 10-20kg/mm<2> to obtain a finished product. The plate frame type poly(aluminium chloride) prepared by using the preparation method is low in cost, simple in process and stable in product quality without limitation in using range.

Description

technical field [0001] The invention belongs to the field of chemical industry, in particular to a production method of plate and frame polyaluminum chloride. Background technique [0002] In the prior art, the production method of polyaluminum chloride has the following disadvantages: one is that the selected raw materials are conventional chemical raw materials, resulting in high manufacturing costs; the other is that the product quality is unstable; The scope of application is very limited. Contents of the invention [0003] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a production method of plate-frame polyaluminum chloride with low production cost, simple process, stable product quality and unlimited application range. [0004] The technical solution of the present invention is: a production method of plate-and-frame polyaluminum chloride, characterized in that: the weight ratio of the raw material formula is: [0005] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/60
CPCC01F7/56
Inventor 张德乐
Owner SHANDONG RUNDE WATER PURIFICATION MATERIAL
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