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Process for producing composite coagulant polymeric aluminium chloride ferrum

A technology of polyaluminum ferric chloride and a production method, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of single, high content, and cannot be used for purification treatment of drinking water, and achieves simple operation process, wide range of raw materials, Product cost reduction effect

Inactive Publication Date: 2003-12-31
曹万印
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The water purifying agents commonly used at present mainly contain two major classes of inorganic coagulants and organic flocculants, wherein the polyaluminum ferric chloride water purifying agent (abbreviated as PAFC in English) closer to the present invention, the used method of its disclosed production method The raw materials are relatively single, there is no oxidation reaction in the production process, and the Fe in the product 2+ high content
A Chinese patent once disclosed a "Highly Polymerized Aluminum Ferric Chloride Composite Coagulant and Production Method" (Patent No. 95119000.8), which uses pyrite waste slag and high alumina cement acid-solution polymerization to produce PAFC, and is limited to sulfur Iron ore waste slag is an iron-containing raw material, and it has not been oxidized and arsenic-removed in the production process. The content of ferrous iron and arsenic in the product is relatively high, and generally cannot be used for purification of drinking water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] (1) Weigh the calcined low bauxite (Al 2 o 3 Content 28-30%) 0.75T, industrial hydrochloric acid (20%) 1.9T, in a 3000L enamel reaction kettle, react at 105-120°C for 2 hours to obtain an aluminum-containing acid solution;

[0010] (2) Weigh 0.55T (Fe 2+ =11.0%, Fe 3+ =1.3%, HCl=3.1%) and the above-mentioned aluminum-containing acid solution are mixed in the polymerization tank, then add 20.0Kg sodium chlorate (above 97%), and water 4.0T;

[0011] (3) Heat the liquid in the polymerization tank to 80°C, add 0.78T calcium aluminate powder, and react for 4.0 hours to obtain liquid PAFC, which is then dried to obtain solid PAFC.

Embodiment 2

[0013] (1) Weigh aluminum hydroxide powder (Al 2 o 3 content of about 50%) 0.25T, industrial hydrochloric acid (20%) 1.9T, in a 3000L enamel reaction kettle, react at 105-120°C for 4 hours to obtain an aluminum-containing acid solution;

[0014] (2) Take by weighing 155Kg (more than 96%) of green vitriol and mix it with the above-mentioned aluminum-containing acid solution in the polymerization tank, add 10.0Kg sodium chlorate (more than 97%), and water 4.0T;

[0015] (3) Steam the liquid in the polymerization tank and raise the temperature to 80°C, add 0.82T calcium aluminate powder, and react for 4.0 hours to obtain liquid PAFC, which is then dried by drum to obtain solid PAFC.

Embodiment 3

[0017] (1) Weigh aluminum hydroxide powder (Al 2 o 3 content of about 50%) 0.25T, industrial hydrochloric acid (20%) 1.9T, in a 3000L enamel reaction kettle, react at 105-120°C for 4 hours to obtain an aluminum-containing acid solution;

[0018] (2) Weighing 85Kg of steelmaking waste iron slag (Fe 2 o 3 ≥50%, FeO≥48%) to 60 mesh, add 0.51T of industrial hydrochloric acid (20%), and react in a 1000L enamel kettle at 105-120°C for 1.5 hours to obtain iron-containing acid solution;

[0019] (3) (1) (2) two kinds of acid solutions are all mixed in the polymerization tank, add 11.0Kg sodium chlorate (more than 95%), water 4.0T;

[0020] (4) Inflate with steam and heat up to 80°C, add 0.86T calcium aluminate powder, react for 4.0 hours, precipitate to obtain liquid PAFC, and dry to obtain solid PAFC.

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PUM

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Abstract

The aluminum iron chloride polymer as composite coagulant is produced with aluminum-containing material and iron-containing material and through acid dissolution, oxidation with chlorate, neutralization with calcium aluminate powder and polymerization. Compared with available technology, the present invention has the advantages of low production cost, capability of being used as drinking water purifying agent, simple usage, and wide application range.

Description

(1) Technical field [0001] The invention relates to a production method of a water purifier, especially a production method of a composite coagulant polyaluminum ferric chloride. The water purifier is mainly used for the purification of domestic water and non-domestic water, especially for the treatment of low turbidity water. deal with. (2) Background technology [0002] The water purifying agents commonly used at present mainly contain two major classes of inorganic coagulants and organic flocculants, wherein the polyaluminum ferric chloride water purifying agent (abbreviated as PAFC in English) closer to the present invention, the used method of its disclosed production method The raw materials are relatively single, there is no oxidation reaction in the production process, and the Fe in the product 2+ The content is higher. A Chinese patent once disclosed a "Highly Polymerized Aluminum Ferric Chloride Composite Coagulant and Production Method" (Patent No. 95119000.8), ...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 胡先国李先升冯兆敏曾锦明曹万印王福良
Owner 曹万印
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