Preparation method for catalyst based on waste steel slag

A catalyst and steel slag technology, applied in the field of catalyst preparation, can solve the problems of water body odor and deterioration, unsatisfactory effect, low reaction efficiency, etc., and achieve the effects of less ozone consumption, fast catalytic reaction speed, and high degradation rate of COD

Active Publication Date: 2016-11-16
格丰环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The organic matter in the water is extremely harmful to water pollution. A large amount of aerobic organic matter enters the water body and is decomposed by aerobic microorganisms, resulting in the depletion of oxygen in the water body. The first consequence is that fish and other water body organisms die due to lack of oxygen. , Consequence two, organic matter will automatically turn to anaerobic decomposition in the case of hypoxia in water, and the decomposition process will produce methane, hydrogen sulfide, ammonium, acetic acid and other substances, making the water sour, smelly and deteriorated
[0006] In recent years, major rivers and lakes in my country have been polluted by organic matter to varying degrees. The Yangtze River, Yellow River, Pearl River, Songhua River, Xijiang River, Taihu Lake, Dongting Lake and other major rivers and lakes in my country have been polluted by organic matter to varying degrees. The state has also invested huge sums of money to treat them Organic matter pollution, but the effect is not ideal. The current treatment method is to oxidize the organic matter by ozone oxidation at the emission source, so as to meet the emission standard. However, if only the ozone oxidation reaction is used, the reaction efficiency will be very low. Therefore, the development of Catalysts for reaction speed and reaction efficiency have important practical significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method of a catalyst based on scrap steel slag, comprising the following steps:

[0019] 1) Grinding and crushing of raw materials: Mix and grind the following raw materials in parts by weight and grind them to 200-325 mesh: 70kg of red mud, 15kg of clay, 6kg of montmorillonite, 20kg of steelmaking slag, 2kg of cellulose, 1kg of safflower powder ;

[0020] 2) Mixing of raw materials: Put the mixed and ground raw materials in step 1) into the mixer, add water accounting for 30% of the total weight of raw materials in step 1) and mix for 30 minutes to prepare mud;

[0021] 3) Body forming: Extrude the mud material prepared in step 2);

[0022] 4) Drying of the green body: drying the green body prepared in step 3) at a temperature of 220°C until the weight percentage of water is less than 0.8%;

[0023] 5) Firing the green body: firing the dried green body in step 4) at a temperature of 900°C to obtain a catalyst based on scrap steel slag.

Embodiment 2

[0025] A preparation method of a catalyst based on scrap steel slag, comprising the following steps:

[0026] 1) Grinding and crushing of raw materials: Mix and grind the following raw materials in parts by weight and grind them to 200-325 mesh: 85kg of red mud, 25kg of clay, 6kg of montmorillonite, 20kg of steelmaking slag, 2kg of cellulose, and 1kg of sage powder ;

[0027] 2) Mixing of raw materials: Put the mixed and ground raw materials in step 1) into the mixer, add water accounting for 20% of the total weight of raw materials in step 1) and mix for 30 minutes to prepare mud;

[0028] 3) Body forming: Extrude the mud material prepared in step 2);

[0029] 4) Drying of the green body: drying the green body prepared in step 3) at a temperature of 220°C until the weight percentage of water is less than 0.8%;

[0030] 5) Firing the green body: firing the dried green body in step 4) at a temperature of 1150°C to obtain a catalyst based on scrap steel slag.

Embodiment 3

[0032] A preparation method of a catalyst based on scrap steel slag, comprising the following steps:

[0033] 1) Grinding and crushing of raw materials: Mix and grind the following raw materials in parts by weight and grind them to 200-325 mesh: 75kg of red mud, 15kg of clay, 6kg of montmorillonite, 30kg of steelmaking slag, 2kg of cellulose, 1kg of safflower powder ;

[0034] 2) Mixing of raw materials: Put the mixed and ground raw materials in step 1) into the mixer, add water accounting for 30% of the total weight of raw materials in step 1) and mix for 30 minutes to prepare mud;

[0035] 3) Body forming: Extrude the mud material prepared in step 2);

[0036] 4) Drying of the green body: drying the green body prepared in step 3) at a temperature of 220°C until the weight percentage of water is less than 0.8%;

[0037] 5) Firing the green body: firing the dried green body in step 4) at a temperature of 1000°C to obtain a catalyst based on scrap steel slag.

[0038] The oz...

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PUM

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Abstract

The invention discloses a preparation method for a catalyst based on waste steel slag, wherein the preparation method comprises the following steps: 1) raw material grinding and crushing; 2) raw material mixing; 3) blank molding; 4) blank drying: drying the blank prepared in the step 3) at the temperature of 200-220 DEG C to make the water weight percentage content be less than 0.8%; and 5) blank sintering: sintering the blank dried in the step 4) at the temperature of 900-1150 DEG C, to obtain the catalyst based on the waste steel slag. The catalyst has the advantages of fast catalytic reaction speed on ozone, high COD degradation rate, less ozone consumption rate, no secondary pollution when in use, and high specific surface area.

Description

technical field [0001] The invention relates to a method for preparing a catalyst based on scrap steel slag. Background technique [0002] Organic water pollution refers to the phenomenon that oxygen-consuming organic pollutants cause a significant reduction in dissolved oxygen content in water. Most of the organic matter in water can be decomposed and utilized by microorganisms. This type of organic matter needs to consume dissolved oxygen in the water during the decomposition process, so it is called oxygen-consuming pollutants. A significant drop in dissolved oxygen is the most notable feature of water bodies polluted by organic matter. [0003] Organic matter in water can be divided into: 1. Natural organic matter. Refers to biological products, metabolites and biological residues, mainly carbohydrates, proteins and oils. 2. Synthetic organic matter. There are mainly plastics, synthetic fibers, detergents, solvents, dyes, paints, pesticides, food additives and pharma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/74B01J23/76C02F1/78
CPCB01J23/007B01J23/74B01J23/76C02F1/78
Inventor 奉向东龚梅玲吴黄河奉启云奉陈旻
Owner 格丰环保科技有限公司
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