Method for catalytic preparation of graphitized particles by cationic resin for treating industrial inorganic wastewater

A cationic resin and inorganic wastewater technology, applied in the direction of inorganic chemistry, chemical instruments and methods, carbon compounds, etc., can solve the problems of high treatment cost, failure to effectively realize the resource utilization of wastewater, etc., and achieve the effect of reducing energy consumption

Inactive Publication Date: 2018-04-13
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are mainly physical methods and chemical methods for the treatment of industrial inorganic wastewater. These methods are too expensive to deal with and cannot effectively realize the resource utilization of wastewater.

Method used

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  • Method for catalytic preparation of graphitized particles by cationic resin for treating industrial inorganic wastewater

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Effect test

Embodiment 1

[0022] A method for preparing graphitized particles by catalyzing a cationic resin for treating industrial inorganic wastewater, comprising the steps of:

[0023] S1. Take a certain amount of nickel-plating wastewater for pretreatment of filtration and concentration, so that there are no particles larger than 100 μm in the nickel-plating wastewater, heat and concentrate the nickel-plating wastewater until the concentration of nickel ions is 1000mg / L, and the cationic resin is 5g according to the feeding ratio / L is put into the nickel-plating wastewater, and the resulting product is placed on a rotary shaker to vibrate for 6 hours at room temperature;

[0024] S2. Filter the product obtained in S1, put the solid in a high-temperature tube furnace through Ar protection (the flow rate is set to 0.2L / min), heat it to 600°C at 5°C / min, and perform high-temperature calcination at 600°C for 1h;

[0025] S3. Take the solid crude product calcined in S2, add hydrochloric acid (1mol / L) ...

Embodiment 2

[0028] A method for preparing graphitized particles by catalyzing a cationic resin for treating industrial inorganic wastewater, comprising the steps of:

[0029] S1. Take a certain amount of nickel-plating wastewater for pretreatment of filtration and concentration, so that there are no particles larger than 100 μm in the nickel-plating wastewater, heat and concentrate the nickel-plating wastewater until the concentration of nickel ions is 500mg / L, and the cationic resin is 10g according to the feeding ratio / L is dropped into the nickel-plating wastewater, and the resulting product is placed on a rotary shaker to vibrate for 12 hours at room temperature;

[0030] S2. Filter the product obtained in S1, and place the solid in a high-temperature tube furnace to pass N 2 Protection (flow rate set to 0.5L / min), heating to 1500°C at 10°C / min, and high-temperature calcination at 1500°C for 3h;

[0031] S3. Take the solid crude product calcined in S2, add hydrochloric acid (1mol / L)...

Embodiment 3

[0034] A method for preparing graphitized particles by catalyzing a cationic resin for treating industrial inorganic wastewater, comprising the steps of:

[0035] S1. Take a certain amount of nickel-plating wastewater for pretreatment of filtration and concentration, so that there are no particles larger than 100 μm in the nickel-plating wastewater, heat and concentrate the nickel-plating wastewater until the concentration of nickel ions is 300mg / L, and the cationic resin is 20g according to the feeding ratio / L is put into the nickel-plating wastewater, and the resulting product is placed on a rotary shaker to vibrate for 48 hours at room temperature;

[0036] S2. Filter the product obtained in S1, and place the solid in a high-temperature tube furnace to pass He and N 2 Mixed gas protection (flow rate set to 2L / min), heated to 1600°C at 20°C / min, and high-temperature calcination at 1600°C for 2h;

[0037] S3. Take the solid crude product after calcining in S2, add hydrochlo...

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Abstract

The invention relates to a method for catalytic preparation of graphitized particles by cationic resin for treating industrial inorganic wastewater. The method includes steps: S1, subjecting industrial inorganic wastewater to pretreatment of filtration and concentration, adding cationic resin into pretreated industrial inorganic wastewater, and well mixing for ion exchange reaction; S2, filteringa mixture after reaction, and subjecting obtained solid to high-temperature calcination under inert gas shielding to obtain a crude product; S3, subjecting the crude product obtained in the step S2 towashing, filtering and drying to obtain graphite particles. The method has advantages that efficient recycling of industrial inorganic wastewater is realized to some extent, and high-attached-value graphite is produced.

Description

technical field [0001] The invention belongs to the field of industrial inorganic wastewater treatment and resource utilization, and in particular relates to a method for preparing graphitized particles by catalyzing a cationic resin used to treat industrial inorganic wastewater. Background technique [0002] Graphite is an excellent carbon material with good thermal stability, thermal conductivity, lubricity and chemical stability, and is widely used in metallurgy, machinery, electrical, chemical and other fields. Due to the large demand, natural graphite can no longer meet the needs of human use, which makes artificial graphite attract much attention. Nowadays, the industrial production of graphite mainly involves calcining petroleum coke, pitch coke, anthracite and other carbon-containing raw materials under anaerobic conditions at around 2500°C. Excessively high temperatures increase the cost of producing graphite. Therefore, how to reduce the reaction temperature and t...

Claims

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Application Information

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IPC IPC(8): C01B32/205
Inventor 胡松任强强陈小芳何立模廖广向军苏胜汪一许凯唐浩戴泽军
Owner HUAZHONG UNIV OF SCI & TECH
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