Method for preparing anti-hardening granular burning-free iron-carbon microelectrolysis filler

An iron-carbon micro-electrolysis, anti-hardening technology, applied in chemical instruments and methods, solid waste removal, water/sludge/sewage treatment, etc. Biodegradability, reduced energy consumption, reduced CODCr and toxicity effects

Active Publication Date: 2014-06-25
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Traditional micro-electrolytic fillers, such as a micro-electrolytic filler for sewage treatment published by CN201010184817.0, mostly use a sintering process. During the high-temperature firing process, a large amount of energy is wasted and the preparation cost is increased.
The combination of non-burning process and micro-electrolysis technology can reduce energy consumption and production cost, but there are still few researches in this area

Method used

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  • Method for preparing anti-hardening granular burning-free iron-carbon microelectrolysis filler

Examples

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Embodiment 1

[0032] A method for preparing anti-hardening granular unburned iron-carbon micro-electrolytic filler, comprising the following steps:

[0033] (1) Iron filings, charcoal, fly ash, cement, quicklime, and clay were dried at 105°C for 2 hours, then pulverized, and passed through a 100-mesh sieve;

[0034](2) Mix the pretreated raw materials in step (1) according to the mass fraction of iron filings 36%, charcoal 9%, fly ash 33%, cement 10%, quicklime 6%, clay 6%, and place in Roll in a disc-type ball forming machine, and spray the binder diluent during the rolling process (water glass solution with a modulus of 2.5-2.8 plus water to dilute 2 times) to assist in ball granulation; pass through a 5-6 mesh sieve, The screened raw meal balls with a particle size of 5-7 mm were placed in a dry and ventilated place and dried at room temperature for 20 hours to obtain raw meal balls;

[0035] (3) Curing the dried raw meal balls obtained in step (2) with water vapor at 105°C for 45 minut...

Embodiment 2

[0038] A method for preparing anti-hardening granular unburned iron-carbon micro-electrolytic filler, comprising the following steps:

[0039] (1) Iron filings, charcoal, fly ash, cement, quicklime, and clay were dried at 110°C for 1 hour, then pulverized, and passed through a 100-mesh sieve;

[0040] (2) Mix the pretreated raw materials in step (1) according to the mass fraction of iron filings 32%, charcoal 8%, fly ash 35%, cement 11%, quicklime 7%, clay 7%, and place in Roll in a disc-type ball forming machine, and spray the binder diluent during the rolling process (water glass solution with a modulus of 2.5-2.8 plus water to dilute 3 times) to assist in ball granulation; pass through a 5-6 mesh sieve, The screened raw meal balls with a particle size of 5-7 mm were placed in a dry and ventilated place and dried at room temperature for 24 hours to obtain raw meal balls;

[0041] (3) Curing the dried raw meal balls obtained in step (2) with water vapor at 110°C for 30 minut...

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Abstract

The invention relates to a method for preparing anti-hardening granular burning-free iron-carbon microelectrolysis filler. The method comprises the following steps of: using scrap iron, charcoal, coal ash, cement, quick lime and clay as materials, mixing the materials respectively according to the mass fraction of 32-26%, 8-10%, 32-35%, 9-12%, 5-7% and 5-7%, granulating and curing to obtain the anti-hardening granular burning-free iron-carbon microelectrolysis filler. The particle diameter of the prepared anti-hardening granular burning-free iron-carbon microelectrolysis filler is 5-7mm. The method has the advantages that when a product is used for sewage treatment, the CODCr and the chromaticity of waste water can be reduced in shorter time, the toxicity of the waste water can be reduced and the biodegradability can be improved; in the use process, the hardening is not easy to occur, the maintenance cost is low and the usage period is long; in the preparation process, waste resources are fully utilized and a burning-free process is adopted, so that the purposes of saving energy, reducing emission and treating wastes with wastes are achieved.

Description

technical field [0001] The invention relates to a method for preparing anti-hardening granular unburned iron-carbon micro-electrolytic filler, which belongs to the technical field of sewage treatment, especially the pretreatment field of high-concentration refractory wastewater. technical background [0002] After the 1960s, due to the rapid development of the modern chemical industry, synthetic plastics, synthetic fibers, synthetic rubber, nylon and other macromolecular organic materials were industrialized. During the production of these organic materials, a large amount of high-concentration organic wastewater will be produced. According to the "National Environmental Statistical Bulletin", by 2008, in my country's total wastewater discharge, industrial organic wastewater accounted for 44.3%. Its concentration is high, its composition is complex, and it often contains many refractory organic substances, especially polycyclic aromatic hydrocarbons, alkylbenzenesulfonic ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461B09B3/00
Inventor 岳钦艳黄德毅高宝玉王树森张冰洁齐元峰
Owner SHANDONG UNIV
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