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A method for recovering valuable metals from oily cylinder liner honing waste by fire method

A valuable metal and cylinder liner technology, applied in the field of comprehensive utilization of solid waste resources, can solve the problems of difficult separation of valuable metal components, fine particle size, high oil content, and achieve easy control, high recovery rate, and large processing capacity. Effect

Active Publication Date: 2021-05-14
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high oil content, fine particle size, and difficult separation of valuable metal components in the cylinder liner honing waste in the prior art, there is currently no good method for processing the cylinder liner honing waste. The purpose of the present invention is to provide a A method for realizing pyrolysis of oil stains in cylinder liner honing waste and efficient recovery of valuable metal components such as iron, copper, and molybdenum through one-step reduction smelting. The method realizes full utilization of solid waste resources of cylinder liner honing waste, and the steps are simple, which is beneficial Industrial production application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Cylinder liner honing waste with TFe70%, Cu2%, Mo0.5%, and oil content 10% is used as raw material, finely ground quicklime and silica are used as flux, finely ground coke powder is used as reducing agent, and lignite humic acid is used as binder Carry out batching, wherein the mass percentage of cylinder liner honing waste less than 200 mesh is 95%, and the mass percentage of quicklime, silica, and coke powder finely ground to less than 200 mesh is 99%, and the mixture CaO / SiO is adjusted 2 The mass ratio is 0.35, Al 2 o 3 The content of the compound is 15%, the amount of the reducing agent is 10%, the amount of the binder is 0.2%, and the water content of the mixture is 6%. The pellets were dried in a 120°C drying oven to obtain dry pellets; the dry pellets were isolated from the air for heating and roasting, the heating rate from room temperature to 500°C was 5°C / min, and the temperature residence time at 500°C was After 90 minutes, the gas in this section is colle...

Embodiment 2

[0031] Cylinder liner honing waste with TFe72%, Cu1.5%, Mo0.8%, and oil content of 20% is used as raw material, finely ground quicklime and silica are used as flux, finely ground coke powder is used as reducing agent, lignite humic acid is used as viscous Batching agent is used for batching, wherein the mass percentage of cylinder liner honing waste less than 200 mesh is 95%, and the mass percentage of quicklime, silica and coke powder finely ground to less than 200 mesh is 99%. Adjust the mixture CaO / SiO 2 The mass ratio is 0.45, Al2 o 3 The content of the reducing agent is 8%, the amount of the reducing agent is 5%, the amount of the binder is 0.01%, and the water content of the mixture is 3%; then the mixture is briquetted with a pair of roller briquetting machines, and the average particle size of the agglomerates is 25mm, the pellets were dried in a 120°C drying oven to obtain dry pellets; the dry pellets were isolated from the air and heated and roasted, the heating ra...

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Abstract

The invention discloses a method for recovering valuable metals from oil-contaminated cylinder liner honing waste by fire method. Roasting, during the roasting process, the oil in the honing waste is pyrolyzed into pyrolysis gas, and the valuable metals gather and grow into ferroalloys, while CaO, SiO 2 、Al 2 o 3 and other impurity elements to form slag, and the ferroalloy block product can be obtained after cooling. This method can realize the pyrolysis recovery of cylinder liner honing waste oil and the enrichment and separation of non-ferrous metals. It has the advantages of large processing capacity and high recovery rate of valuable metals, and is especially suitable for the treatment of high oil content, fine particle size, and valuable metals. A wide variety of cylinder liner honing waste.

Description

technical field [0001] The invention relates to a method for recovering valuable metals from oily cylinder liner honing waste, in particular to a method for separating and recovering iron from cylinder liner honing waste with high oil content, fine particle size and high content of valuable metal components by pyromelting. , molybdenum, copper and other valuable metals, belonging to the technical field of comprehensive utilization of solid waste resources. Background technique [0002] The cylinder liner is the cavity where the piston is placed on the cylinder block of the internal combustion engine. It is the orbit of the piston movement, and the gas burns and expands in it to keep the engine running normally. In order to maintain the tightness of the contact between the cylinder and the piston and reduce the friction loss of the piston moving in it, the inner wall of the cylinder should have high machining accuracy and precise shape and size. [0003] Cylinder body materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B34/34C22B15/00
CPCC22B7/001C22B15/0056C22B34/34
Inventor 韩桂洪刘兵兵黄艳芳张莉黄宇坤朱广丽薛毓斌
Owner ZHENGZHOU UNIV
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