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Method for preparing novel and efficient reduced ion particle fillers

A particle filler, reduced iron technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of decreased iron reaction activity, no obvious improvement in the passivation of the surface of the filler, etc., and achieves high catalytic efficiency. The effect of reducing the cost of firing and overcoming the passivation of the filler surface

Inactive Publication Date: 2016-08-03
CHANGSHA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the problem is that the surface passivation of the filler has not been significantly improved; in addition, when the wastewater flows through the filler layer, the problem of the obvious decrease in iron reactivity caused by the continuous increase of the pH value of the wastewater has not been overcome.

Method used

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  • Method for preparing novel and efficient reduced ion particle fillers
  • Method for preparing novel and efficient reduced ion particle fillers
  • Method for preparing novel and efficient reduced ion particle fillers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Get iron powder, pass 100 mesh sieves. Take manganese dioxide, pulverize and grind, and pass through a 100-mesh sieve. Take graphite, crush and grind it, and pass it through a 100-mesh sieve; respectively take zinc powder and zinc chloride, crush and grind it, pass it through a 100-mesh sieve, and mix them thoroughly at a weight ratio of 1:3. The sieved iron powder, manganese dioxide, graphite powder, zinc powder and zinc chloride mixture are fully mixed according to the mass ratio of 80:10:5:1 to obtain the mixture A; respectively take copper powder and copper chloride, pulverize Grind, pass through a 100-mesh sieve, and fully mix with a weight ratio of 8:1 to make material B. Mix mixture A and material B at a mass ratio of 10:1, and evenly spray 8% potassium hydroxide solution into the mixture according to the mass ratio of mixture to potassium hydroxide solution of 12:1, shape, dry, fill in cans, and enter For the kiln, heat up to 300°C for 1 hour without air; then...

Embodiment 2

[0026] Get iron powder, pass 100 mesh sieves. Take manganese dioxide, pulverize and grind, and pass through a 100-mesh sieve. Take graphite, crush and grind it, and pass it through a 100-mesh sieve; respectively take zinc powder and zinc chloride, crush and grind it, pass it through a 100-mesh sieve, and mix them thoroughly at a weight ratio of 1:3. The sieved iron powder, manganese dioxide, graphite powder, zinc powder and zinc chloride mixture are fully mixed according to the mass ratio of 80:15:5:2 to obtain the mixture A, respectively take copper powder and copper chloride, pulverize Grind, pass through a 100-mesh sieve, and mix thoroughly at a weight ratio of 8:1 to obtain material B; mix material A and material B at a mass ratio of 14:1, and mix material and potassium hydroxide solution at a mass ratio of 12:1 Spray 8% potassium hydroxide solution evenly into the mixture, shape, dry, put in cans, put into kiln, then heat up to 300°C for 1 hour without air; then heat up ...

Embodiment 3

[0028] Get iron powder, pass 100 mesh sieves. Take manganese dioxide, pulverize and grind, and pass through a 100-mesh sieve. Take graphite, crush and grind it, and pass it through a 100-mesh sieve; respectively take zinc powder and zinc chloride, crush and grind it, pass it through a 100-mesh sieve, and mix them thoroughly at a weight ratio of 1:3. The sieved iron powder, manganese dioxide, graphite powder, zinc powder and zinc chloride mixture are fully mixed according to the mass ratio of 80:15:5:1 to obtain the mixture A; respectively take copper powder and copper chloride, pulverize Grind, pass through a 100-mesh sieve, and mix thoroughly at a weight ratio of 8:1 to make material B. Mix mixture A and material B at a mass ratio of 12:1, and mix the mixture to potassium hydroxide solution at a mass ratio of 12:1 Spray 8% potassium hydroxide solution evenly into the mixture, shape it, dry it, put it in cans, and put it into a kiln. Then the temperature was raised to 300°C ...

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Abstract

The invention discloses a method for preparing novel and efficient reduced ion particle fillers, and relates to the technical field of preparation of chemical fillers. The method comprises the following steps: selecting the following raw materials by weight: 70%-80% of iron powder, 6%-10% of a mixture of copper and copper chloride, 5%-15% of manganese dioxide, 3%-5% of graphite powder, 1%-2% of a mixture of zinc and zinc chloride; crushing, screening and uniformly mixing all the raw materials; uniformly spraying 8% of a potassium hydroxide solution to a mixed material according to a mass ratio of the mixed material to the potassium hydroxide solution being 12:1; then performing molding, baking, staged high-temperature firing, cooling, crushing and sieving treatments to obtain the novel and efficient reduced ion particle fillers. Compared with single copper chloride or zinc chloride selected as a catalyst, a composite catalyst has a higher catalytic efficiency and has advantages in overcoming surface passivation of fillers; in addition, the 8% of potassium hydroxide solution is used as a spraying agent, so that the firing cost is greatly reduced without degrading the product performance.

Description

Technical field: [0001] The invention relates to a preparation method of a novel high-efficiency reduced iron particle filler, and belongs to the technical field of preparation of chemical fillers. Background technique: [0002] Iron is an active metal with active chemical properties, so it is often used to degrade organic pollutants in water bodies. The mechanism of iron purifying water mainly has three aspects: (1) Reduction, zero-valent iron has strong reducibility, and can directly reduce and decompose pollutants in water. (2) Micro-electrolysis, [H] and Fe produced by zero-valent iron through micro-electrolysis 2+ It can undergo oxidation-reduction reaction with the polluting components in the wastewater, thereby degrading the pollutants. (3) Coagulation adsorption, the ions produced by iron in the reduction process will generate Fe(OH) 2 with Fe(OH) 3 Precipitation, adsorption to remove pollutants. [0003] At present, the main problem of using reduced iron to rem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F101/34
CPCC02F1/4678C02F2101/345
Inventor 宋勇杨珊于海涛蒋诚任垚
Owner CHANGSHA UNIVERSITY
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