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Preparing method for calcium aluminate powder for water purifying agent

A technology of calcium aluminate powder and water purifying agent, which is applied in the direction of preparation of calcium aluminate, alkaline earth metal aluminate/aluminum oxide/aluminum hydroxide, chemical instruments and methods, etc., which can solve adverse effects on human health, large energy consumption, The problem of high content, to achieve a significant effect of saving coal, the effect of saving coal

Inactive Publication Date: 2019-04-12
HENAN YISHUIYUAN WATER PURIFICATION MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, many calcium aluminate powders used in water purifiers on the market have high content of heavy metal indicators such as arsenic, cadmium, chromium, lead, etc., which is not conducive to human health. The production process consumes a lot of energy and causes serious pollution.

Method used

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  • Preparing method for calcium aluminate powder for water purifying agent
  • Preparing method for calcium aluminate powder for water purifying agent
  • Preparing method for calcium aluminate powder for water purifying agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of calcium aluminate powder for water purifying agent, comprising the following steps:

[0028] 1) In terms of mass percentage, 32.4% of limestone, 57.6% of kaolin and 10% of carbide slag are mixed and ground, and then homogenized; before limestone, kaolin and carbide slag are mixed, limestone and kaolin are crushed to a particle size smaller than 2.5cm, the calcium carbide slag is directly mixed and proportioned; use a φ3.6×11m raw material mill to grind until the fineness (0.08mm square hole sieve residue) is less than 11.5%;

[0029] 2) Transfer the mixture obtained in step 1) to a five-stage cyclone preheater for preheating, the preheating temperature is 270-950°C, and the preheating time is 15 minutes, and then sent to a φ3.4×45m rotary kiln for calcination, calcined The conditions include: the rotation speed of the rotary kiln is 3 rpm, the calcination temperature is 1350°C, the calcination time is 40min, the burned clinker is cooled in a grat...

Embodiment 2

[0032] Same as Example 1, the difference is: 38% limestone, 57% kaolin and 5% carbide slag are mixed and ground.

Embodiment 3

[0034] Same as Example 1, the difference is: 26.7% limestone, 58.3% kaolin and 15% carbide slag are mixed and ground.

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Abstract

The invention belongs to the technical field of water-purifying-agent raw material preparing, and discloses a preparing method for calcium aluminate powder for a water purifying agent. The method includes the following steps that 1) 25%-40% by mass of limestone, 55%-60% by mass of kaolin and 5%-15% by mass of carbide slags are mixed and ground, and then are homogenized; 2) the mixture obtained inthe step 1) is delivered to a five-stage cyclone preheater and preheated, and then is delivered to a rotary kiln and calcined, and burned clinker is put into a grate cooler and cooled; 3) the coolingclinker obtained in the step 2) is homogenized, and then is ground, and the calcium aluminate powder for the water purifying agent is obtained. According to the preparing method for the calcium aluminate powder for the water purifying agent, by adding the carbide slags, the using amount of the limestone can be decreased, discharging of smoke SO2 is reduced, coal can be saved, and energy consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of raw material preparation of water purifiers, and in particular relates to a preparation method of calcium aluminate powder for water purifiers. Background technique [0002] Calcium aluminate powder is a raw material of water purifier, the main components are CaO, Al 2 o 3 , Fe 2 o 3 , has strong activity, using calcium aluminate powder to prepare water purifiers can save a lot of manpower, electricity, and can greatly reduce costs, and has the advantages of simple process equipment and easy mastering. At the same time, calcium aluminate powder is a production Ideal raw material for water purifier basic aluminum chloride and polyaluminum chloride. With the continuous development of the national economy, the demand for the production of calcium aluminate powder and the use of various raw materials continue to increase. The existing process for producing calcium aluminate powder is mainly to use high-a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/16C02F1/52
CPCC01F7/164C02F1/5245
Inventor 乔友民
Owner HENAN YISHUIYUAN WATER PURIFICATION MATERIAL TECH CO LTD
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