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4A zeolite production technique by bruising process

A zeolite and process technology, which is applied in the field of 4A zeolite production by the crushing method, can solve the problems of large waste liquid discharge, long crystallization time, complex process, etc., and achieve the effects of increasing production capacity, low cost, and reducing reaction temperature

Inactive Publication Date: 2009-03-11
SHANDONG DONGFANG HUALONG IND & TRADE GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This production process has the following disadvantages or deficiencies: 1. The process is complex, the crystallization time is long, the yield is low, and the waste liquid discharge is large, which affects environmental protection; 2. Sodium hydroxide and aluminum hydroxide are used for the production of sodium aluminate solution, which requires large investment and costly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (A) 300 parts by weight of soda ash and 600 parts of high-alumina cement are mixed evenly, added to a reaction kettle filled with 5000 parts of water, controlled at a temperature of 70°C, and reacted for 10 minutes to obtain a sodium aluminate solution; (B) the prepared Mix 4 parts of the obtained sodium aluminate solution with 1 part of liquid sodium silicate with a modulus of 2.9 and a solid content of 20%, add it to a crystallization tank for crystallization, and add 0.004 parts of a crushing agent at the same time, control the temperature at 70°C, and react for 20 minutes to discharge ; (C) filtering out the zeolite; (D) drying, storing or packaging. The preparation of the crushing agent is: the volume ratio 1: 1: 0.001=(A) step sodium aluminate solution: the modulus is 2.9, and the solid content is 20% sodium silicate solution: absolute ethanol is mixed, the temperature is raised to 70 ℃, React for 1 hour.

Embodiment 2

[0017] (A) Mix 400 parts by weight of soda ash and 750 parts of high-alumina cement evenly, add them into a reaction kettle filled with 7000 parts of water to react, control the temperature at 80°C, and react for 20 minutes to obtain a sodium aluminate solution; (B) Prepare Mix 5 parts of sodium aluminate solution with a modulus of 3.2 and 1 part of liquid sodium silicate with a solid content of 25%, add to crystallization tank for crystallization, add 0.005 parts of crushing agent at the same time, control temperature at 80°C, react for 25 minutes and discharge (C), (D) steps are with embodiment one. The preparation of crushing agent is: the volume ratio 2: 1: 0.002=(A) step sodium aluminate solution: the modulus is 2.9, the sodium silicate solution of solid content 25%: dehydrated alcohol is mixed, is warming up to 75 ℃, reacts 1.5 hours to make.

Embodiment 3

[0019] (A) Mix 500 parts by weight of soda ash and 900 parts of high-alumina cement evenly, add them into a reaction kettle filled with 8000 parts of water, control the temperature at 90°C, and react for 20 minutes to obtain a sodium aluminate solution; (B) the obtained Mix 6 parts of sodium aluminate solution with 1 part of liquid sodium silicate with a modulus of 3.2 and a solid content of 30%, add it to a crystallization tank for crystallization, and add 0.006 parts of a breaking agent at the same time, control the temperature at 90°C, react for 30 minutes and discharge; (C), (D) steps are identical with embodiment one. The preparation of crushing agent is: the volume ratio 3: 1: 0.003=(A) step sodium aluminate solution: the modulus is 3.2, the sodium silicate solution of solid content 30%: dehydrated alcohol is mixed, be warming up to 80 ℃, react 2 hours to make.

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Abstract

The invention discloses a bruising method of 4A zeolite, which comprises the following steps: (A) allocating 300-500 wt soda and 600-900 wt alumina cement; mixing evenly; inputting into autoclave with 5000-8000 wt water; reacting 10-30 min; controlling temperature at 70-90 deg.c; getting sodium aluminate solution; (B) allocating 4-6 wt sodium aluminate solution, 1 wt liquid soluble glass with module at 2.9-3.2 and solid content at 20-30%; mixing; adding into crystal tank to crystal; adding 0.004-0.006 wt bruising agent; controlling temperature at 70-90 deg.c; reacting 20-30 min; discharging; allocating bulk factor at 1-3:1:0.001-0.003= (A) sodium aluminate solution : module at 2.9-3.2 and solid content at 20-30% soluble glass solution : anhydrous alcohol; mixing; heating-up to 70-80 deg.c; reacting 1-2 h; getting bruising agent; (C) filtering; discharging zeolite; (D) drying; storing or packing.

Description

1. Technical field [0001] The invention relates to a fine chemical zeolite production process, in particular to a crushing method for producing 4A zeolite. 2. Background technology [0002] The current general process for artificially synthesizing 4A zeolite is: first produce sodium aluminate solution with aluminum hydroxide, sodium hydroxide and water, then add the sodium silicate solution to the slurrying tank for slurrying, then put it into the crystallization tank, and add the guiding agent Crystallization, and then through the process of filtration-stirring-filtering-drying-packaging to complete the production. This production process has the following disadvantages or deficiencies: 1. The process is complex, the crystallization time is long, the yield is low, and the waste liquid discharge is large, which affects environmental protection; 2. Sodium hydroxide and aluminum hydroxide are used for the production of sodium aluminate solution, which requires large investment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B39/04C01F7/04
Inventor 谢文峰刘晓松李海丽王东山刘福明
Owner SHANDONG DONGFANG HUALONG IND & TRADE GRP CO LTD
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