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Acidified zeolite

A technology of zeolite and dilute hydrochloric acid, applied in the direction of crystalline aluminosilicate zeolite, etc., can solve the problems of difficult structural features, internal pore barriers, poor zeolite colloid performance, etc.

Active Publication Date: 2014-08-13
江苏世澳非金属应用科技有限公司
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  • Abstract
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Problems solved by technology

[0004] Due to some structural defects in natural zeolite, such as the superimposed defects of the crystal framework, the internal pores are obstructed, so the pore diameter of natural zeolite is smaller than that of synthetic zeolite, and it is difficult to exert its structural characteristics in applications.
[0005] After zeolite is acidified, the adsorption performance can be improved, but the colloidal performance of zeolite is poor, so it cannot be directly used in the production of molecular sieves, catalysts and desiccants that require a certain colloidal viscosity

Method used

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Embodiment Construction

[0030] Below in conjunction with embodiment the present invention will be further described:

[0031] 1. The zeolite batching after acidification is composed of the following components by weight percentage: 96.5% of semi-finished zeolite after acidification, 1.5% of instant sodium silicate, 1.4% of polyvinyl alcohol, 0.58% of hydroxypropyl methylcellulose and 0.02% of sodium carbonate %.

[0032] 2. The production method of the acidified zeolite: input the acidified zeolite ingredients into the mill for grinding, the particle fineness is ≤0.074 mm, and the powder after grinding is the acidified zeolite finished product.

[0033] 3. The production method of the acidified zeolite semi-finished product: (1) Input the ingredients of the zeolite mixture into the mixer that has been running and stir, and then slowly add dilute hydrochloric acid into the zeolite mixture for acidification; (2) Pass the acidified zeolite mixture through the rollers Extrude into zeolite flakes, the th...

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Abstract

The invention discloses an acidified zeolite. The technical scheme is as follows: the acidified zeolite is composed of zeolite, attapulgite clay, magnesia, hydrochloric acid, instant sodium silicate, polyvinyl alcohol, hydroxypropyl methylcellulose and sodium carbonate. The acidified zeolite materials are input into a mill and milled, and the milled powder is the acidified zeolite. The production method of acidified red mud adopts acidification before composite proportioning, thereby avoiding the chemical reaction between the sulfuric acid and the instant sodium silicate, polyvinyl alcohol, hydroxypropyl methylcellulose and sodium carbonate; and the acidified zeolite can effectively remove ammonia, iron, fluorine, phosphides and micro pollutants in domestic sewage, and can be used for removing or recovering heavy metal ions and treating radioactive waste. The acidified rear has the characteristics of favorable thixotropy, favorable heat stability, favorable plasticity and favorable binding property, and is suitable for producing drying agents, adsorptive separation agents, molecular sieves, catalysts, defluorination soil improvers, deodorizers and firefighting products.

Description

technical field [0001] The invention relates to acidification treatment, in particular to an acidified zeolite. Background technique [0002] Zeolite is mainly formed in the low-temperature hydrothermal stage, and is often found in the pores of extrusive rocks, as well as in hydrothermal deposits and modern hot spring deposits. [0003] More than 30 kinds of zeolites have been found in nature, the more common ones are analcite, chabazite, calcium zeolite, heulandite, sodium zeolite, mordenite, stilbite, etc., which mainly contain calcium and sodium. Their water content varies with the outside temperature and humidity. The crystal system to which the crystal belongs varies with different mineral species. If the inside of various zeolites is pure, they should be colorless or white, but if other impurities are mixed inside, they will show various light colors. Zeolites have Glassy luster. [0004] Due to some structural defects in natural zeolite, such as superposition defec...

Claims

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Application Information

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IPC IPC(8): C01B39/02
Inventor 许庆华许盛英黄允金黄飞翔陈丽萍蒋文兰
Owner 江苏世澳非金属应用科技有限公司
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