A method of preparing a polyferric-aluminum-chloride water purifier

A technology of polyferric aluminum chloride and water purifying agent, which is applied in the field of water treatment, can solve the problems of low cost, fast purification speed, difficult treatment of pyrite slag, etc., achieves low cost, fast water purification speed, and reduces harmful effects. The effect of substance content

Inactive Publication Date: 2017-02-15
JIANGMEN JIANGHAI WEI CLEAN WATER MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to make up for the deficiencies of the prior art, the present invention provides a polyferric aluminum chloride water purifying agent and a preparation method thereof. The water purifying agent solves the problem that pyrite slag is difficult to handle, and it can effectively remove polluting components, and the purification speed is fast and the cost is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The polyferric aluminum chloride water purifying agent is configured according to the following parts by weight: 40 parts of pyrite slag, 15 parts of diatomaceous earth, 200 parts of hydrochloric acid, and an appropriate amount of ferric chloride or aluminum trichloride.

[0017] The preparation method of above-mentioned polyferric aluminum chloride water purifier comprises the following steps:

[0018] (1) Grinding the pyrite slag and diatomite to 200 mesh, set aside;

[0019] (2) Add hydrochloric acid with a mass fraction of 37% in a reaction kettle with a pressure of 0.2Mpa, and heat to 50°C;

[0020] (3) Add the powder obtained in step (1) into the reactor and continue heating to obtain the extract;

[0021] (4) Detect the content of aluminum and iron in the extract, and add appropriate amount of ferric chloride or aluminum trichloride according to the content of aluminum and iron to adjust the ratio of aluminum and iron;

[0022] (5) Evaporate and concentrate the...

Embodiment 2

[0024] The polyferric aluminum chloride water purifying agent is configured according to the following parts by weight: 80 parts of pyrite slag, 30 parts of diatomaceous earth, 400 parts of hydrochloric acid, and an appropriate amount of ferric chloride or aluminum trichloride.

[0025] The preparation method of above-mentioned polyferric aluminum chloride water purifier comprises the following steps:

[0026] (1) Grinding the pyrite slag and diatomite to 400 mesh, set aside;

[0027] (2) Add hydrochloric acid with a mass fraction of 37.5% in a reaction kettle with a pressure of 0.2Mpa, and heat to 40°C;

[0028] (3) Add the powder obtained in step (1) into the reactor and continue heating to obtain the extract;

[0029] (4) Detect the content of aluminum and iron in the extract, and add appropriate amount of ferric chloride or aluminum trichloride according to the content of aluminum and iron to adjust the ratio of aluminum and iron;

[0030] (5) Evaporate and concentrate t...

Embodiment 3

[0032] The polyferric aluminum chloride water purifying agent is configured according to the following parts by weight: 60 parts of pyrite slag, 20 parts of diatomaceous earth, 300 parts of hydrochloric acid, and an appropriate amount of ferric chloride or aluminum trichloride.

[0033] The preparation method of above-mentioned polyferric aluminum chloride water purifier comprises the following steps:

[0034] (1) Grinding pyrite slag and diatomite to 300 mesh, set aside;

[0035] (2) Add hydrochloric acid with a mass fraction of 37% in a reaction kettle with a pressure of 0.2Mpa, and heat to 60°C;

[0036] (3) Add the powder obtained in step (1) into the reactor and continue heating to obtain the extract;

[0037] (4) Detect the content of aluminum and iron in the extract, and add appropriate amount of ferric chloride or aluminum trichloride according to the content of aluminum and iron to adjust the ratio of aluminum and iron;

[0038] (5) Evaporate and concentrate the ext...

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Abstract

A method of preparing a polyferric-aluminum-chloride water purifier is disclosed. Raw materials include sintered pyrite slag, diatomite, hydrochloric acid, ferric chloride and/or aluminium chloride. The method includes steps of crushing the sintered pyrite slag and the diatomite until the particle size is 200-400 meshes, adding into a reaction kettle, mixing with the hydrochloric acid to obtain a leaching liquid, detecting aluminum and iron contents of the leaching liquid, adding proper amounts of the ferric chloride and/or the aluminium chloride according to the aluminum and iron contents to regulate the ratio of the aluminum and iron contents, subjecting the leaching liquid to evaporation and concentration, drying, adding a certain amount of water again, allowing the mixture to stand, and grinding to obtain the water purifier. The method achieves effective utilization of the sintered pyrite slag, turns waste into things of value, and overcomes the problem that the sintered pyrite slag is difficult to treat. The water purifier combines advantages of polyaluminium chloride and advantages of the ferric chloride, and is good in water purification effects and wide in effective pH value range.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a preparation method of a polyferric aluminum chloride water purifying agent. Background technique [0002] At present, my country's industrial sulfuric acid production is mainly obtained by roasting pyrite ore into sulfur dioxide, followed by purification, catalytic oxidation, and absorption. During the roasting process, a large amount of pyrite slag is produced, the main components of which are iron oxide, aluminum oxide, silicon dioxide, calcium oxide, magnesium oxide, lead, zinc, selenium, arsenic, phosphorus, etc. , not only occupies land, pollutes the environment, but also causes groundwater pollution, which has always been one of the difficult problems for sulfuric acid enterprises. The iron and aluminum oxides in pyrite slag are one of the raw materials for preparing polyferric aluminum chloride water purifying agent. Therefore, how to use pyrite slag to prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/28
CPCC02F1/5245C02F1/281
Inventor 杨炯辉
Owner JIANGMEN JIANGHAI WEI CLEAN WATER MATERIALS CO LTD
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