Method for preparing composite phosphorus removing agents on basis of converter steel slag

A composite phosphorus removal agent, converter steel slag technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc. High efficiency, easy operation, and the effect of preventing secondary pollution

Active Publication Date: 2017-11-07
义乌市君胜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: Aiming at the problem that the traditional phosphorus removal method will leave metal ions in the water, cause chronic poisoning to aquatic organisms, and the operating conditions are harsh, a compound phosphorus removal method based on converter steel slag is provided. agent method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] Preparation of mixed granules: Put fluorite, bentonite and diatomaceous earth into a mixer at a mass ratio of 3:5:2, stir at 500r / min for 30-35min, collect the stirred mixture, and then get mixed granules.

[0022] Preparation of molten mixture:

[0023] (1) Take converter steel slag and put it into a pulverizer for crushing, pass through a 100-mesh sieve, collect the sieved particles, put the sieved particles and 3% oxalic acid solution in a mass ratio of 1:3-5, and put them into a container , Heating the container to 80-85°C, keeping it warm for 30-45 minutes, cooling to room temperature, standing still for 10-15 minutes, removing floating impurities, and then filtering the mixture in the container to collect the filter residue;

[0024] (2) Put the filter residue in an oven at 80°C to dry for 6-9 hours, collect the dry matter, put the dry matter, aluminum stearate and graphene into a ball milling tank at a mass ratio of 20-23:1:3, and pour into the ball milling tank ...

example 1

[0031] Preparation of mixed granules: put fluorite, bentonite and diatomaceous earth into a mixer at a mass ratio of 3:5:2, stir at 500r / min for 35min, collect the stirred mixture, and obtain mixed granules.

[0032] Preparation of molten mixture:

[0033] (1) Take converter steel slag and put it into a pulverizer for crushing, pass through a 100-mesh sieve, collect the sieved particles, put the sieved particles and 3% oxalic acid solution in a mass ratio of 1:5, put them into a container, and Heat the container to 85°C, keep it warm for 45 minutes, cool to room temperature, and let it stand for 15 minutes to remove floating impurities, then filter the mixture in the container to collect the filter residue;

[0034] (2) Dry the filter residue in an oven at 80°C for 9 hours, collect the dried material, put the dried material, aluminum stearate and graphene into a ball milling tank at a mass ratio of 23:1:3, and add the dried material into the ball milling tank 9 times the mass...

example 2

[0046] Preparation of mixed granules: put fluorite, bentonite and diatomaceous earth into a mixer at a mass ratio of 3:5:2, stir at 500r / min for 30min, collect the stirred mixture, and obtain mixed granules.

[0047] Preparation of molten mixture:

[0048] (1) Take converter steel slag and put it into a pulverizer for crushing, pass through a 100-mesh sieve, collect the sieved particles, put the sieved particles and 3% oxalic acid solution in a mass ratio of 1:3, put them into a container, and Heat the container to 80°C, keep it warm for 30 minutes, cool to room temperature, and let it stand for 10 minutes to remove floating impurities, then filter the mixture in the container to collect the filter residue;

[0049] (2) Dry the filter residue in an oven at 80°C for 6 hours, collect the dried material, put the dried material, aluminum stearate and graphene into a ball milling tank at a mass ratio of 20:1:3, and add the dried material into the ball milling tank Steel balls with a...

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PUM

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Abstract

The invention relates to a method for preparing composite phosphorus removing agents on the basis of converter steel slag, and belongs to the technical field of phosphorus removing agent preparation. Firstly, steel slag is crushed and sieved; then, stirring, mixing and heating are performed on the steel slag and an oxalic acid solution; still standing is performed; after floating impurities are removed, filtering is performed; filter slag is dried; mixing and ball milling are performed on the filter slag, aluminum stearate and the like to obtain ball milling materials; then, after fusing, the ball milling materials are mixed with self-made mixed particles, calcium carbonate and the like; heating and grinding are performed. The prepared composite phosphorus removing agents cannot remain metal ions in the water; toxic or harmful effects cannot be generated on organisms in the water; meanwhile, the use is simple and convenient; the phosphorus removing rate is high; wide application prospects are realized.

Description

technical field [0001] The invention relates to a method for preparing a composite dephosphorization agent based on converter steel slag, belonging to the technical field of water treatment. Background technique [0002] Steel slag is an industrial waste containing metal oxides such as Ca, Si, Fe, Mg, Al, etc. It has a certain alkalinity and a large specific surface area. It is currently mainly used in metallurgical industry, building materials, and road construction in my country. But its utilization rate is only 10%. In recent years, steel slag has attracted widespread attention due to its good adsorption properties. There have been many reports on the use of steel slag to treat phosphorus-containing wastewater, but most of them focus on the research of micro-powdered steel slag and the phosphorus removal effect is not ideal, which makes steel slag in practical application. subject to many restrictions. [0003] Domestic sewage is mainly various detergents used in urban l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/58C02F1/28C02F101/20
CPCC02F1/281C02F1/58C02F2101/105C02F2101/20
Inventor 张桂芳薛洋宋昊
Owner 义乌市君胜科技有限公司
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