Calcium aluminate powder for water treatment agent and preparation method thereof

A technology of calcium aluminate powder and water treatment agent, which is applied in water/sewage treatment, water/sludge/sewage treatment, alkaline earth metal aluminate/alumina/aluminum hydroxide preparation, etc., which can solve the dissolution rate of alumina Low cost, poor practicability, complicated preparation and other problems, to achieve the effects of shortening the sintering time, easy melting and crystallization, and lowering the calcination temperature

Inactive Publication Date: 2012-02-29
广东慧信环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The multi-component sintering aid has a wide variety of raw materials, complicated preparation, large dosage, and the dissolution rate of alumina in the product is low, so the practicability is poor

Method used

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  • Calcium aluminate powder for water treatment agent and preparation method thereof
  • Calcium aluminate powder for water treatment agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A calcium aluminate powder for water treatment agent, the weight ratio of raw materials of bauxite (60% by mass of alumina), limestone and borax is 60:30:1.

[0024] The preparation method of above-mentioned calcium aluminate powder, technological process sees figure 1 ,Specific steps are as follows:

[0025] 1) The bauxite, limestone, and borax are subjected to coarse crushing and secondary crushing in the jaw crusher and double-roller crusher respectively to obtain pellets with a particle size of 5 mm, and then put the pellets into a ball mill according to the above weight ratio to mix Grind evenly to obtain 180 mesh raw meal;

[0026] 2) Send the raw meal into the preheating device, the temperature of the tail gas at the kiln tail is 600-900°C, preheat and pre-decompose for 40 minutes;

[0027] 3) The raw meal that has been preheated and pre-decomposed is sent to the rotary kiln for calcination, and the temperature in the kiln is controlled at 1200-1350°C, and sint...

Embodiment 2

[0030] A calcium aluminate powder for water treatment agent, the weight ratio of the raw materials of bauxite (65% by mass of alumina), limestone, borax and boronite is 70:42:0.25:0.25.

[0031] The preparation method of above-mentioned calcium aluminate powder, technological process sees figure 1 ,Specific steps are as follows:

[0032] 1) Perform coarse crushing and secondary crushing of bauxite, limestone, borax, and boronite in the jaw crusher and double-roller crusher respectively to obtain pellets with a particle size of 5mm, and then put the pellets into Mix and grind evenly in a ball mill to obtain 180 mesh raw meal;

[0033] 2) Send the raw meal into the preheating device, the temperature of the tail gas at the kiln tail is 600-900°C, preheat and pre-decompose for 40 minutes;

[0034] 3) The raw meal that has been preheated and pre-decomposed is sent to the rotary kiln for calcination, and the temperature in the kiln is controlled at 1200-1350°C, and sintered for 20...

Embodiment 3

[0037] A calcium aluminate powder for water treatment agent, the weight ratio of the raw materials of bauxite (72% by mass of alumina), limestone, borax, boronite is 80:45:1:1.

[0038] The preparation method of above-mentioned calcium aluminate powder, technological process sees figure 1 ,Specific steps are as follows:

[0039] 1) Perform coarse crushing and secondary crushing of bauxite, limestone, borax, and boronite in the jaw crusher and double-roller crusher respectively to obtain pellets with a particle size of 5mm, and then put the pellets in accordance with the above weight ratio Mix and grind evenly in a ball mill to obtain 180 mesh raw meal;

[0040] 2) Send the raw meal into the preheating device, the temperature of the tail gas at the kiln tail is 600-900°C, preheat and pre-decompose for 40 minutes;

[0041] 3) The raw meal that has been preheated and pre-decomposed is sent to the rotary kiln for calcination, and the temperature in the kiln is controlled at 1200...

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Abstract

The invention discloses calcium aluminate powder for a water treatment agent and a preparation method thereof. The calcium aluminate powder is prepared from raw materials of bauxite, limestone and boracic mineral according to a weigh ratio of 60-80:30-45:0.5-2. The preparation method is characterized in that the high activity calcium aluminate powder is produced through treating the boracic mineral as a mineralizer, and adopting a calcining tail gas waste heat preheating pre-decomposition-calcining technology. The method which treats the boracic mineral as the mineralizer in the invention allows a case that the high activity calcium aluminate powder is produced from low grade bauxite to be possible, so the utilization rate of bauxite resources is improved, thereby the method has substantial economic, social and environmental benefits; and the clinker calcining temperature is reduced, the clinker sintering reaction speed is accelerated, and the alumina leaching rate is improved, so purposes of energy consumption reduction, and product quality and output improvement are reached.

Description

technical field [0001] The invention relates to a production method of calcium aluminate powder for water treatment agent, in particular to a production method of using mineralizer to produce high activity calcium aluminate powder. Background technique [0002] With the rapid development of environmental protection and the continuous enhancement of people's awareness of environmental protection, the protection of water resources has been paid more and more attention by the government and the public, and the demand for water purifier series products is increasing. Among the series of water purifiers, the aluminum salt series products are used in the largest amount and in the widest range. However, with the rapid growth of the demand for water purifier products, the shortage of raw materials for water purifiers is becoming more and more obvious. Among them, the production of aluminum salt series water purifiers The contradiction between the supply and demand of the required ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/16C02F1/00
CPCY02P20/129
Inventor 蒋志飞区叶秀谭铭卓潘江俊
Owner 广东慧信环保有限公司
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