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Method of separating iron and carbon from dust setting ash

A technology for iron separation and electromagnetic separation, applied in solid separation, wet separation, chemical instruments and methods, etc., to achieve high application value and added value, simple process, and environmental improvement

Inactive Publication Date: 2006-06-14
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few research reports on the separation of the main components of iron and carbon in kiln tail ash.
However, there is no report on the separation of iron and carbon in the dust by electromagnetic method.

Method used

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  • Method of separating iron and carbon from dust setting ash

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0014] Taking 1kg of dedusting ash as an example, mix the dedusting ash with water to make a suspension of 0.2kg / L, and add it from the top inlet of the electromagnetic separation tower through a pump at a flow rate of 5L / min. The tower has a diameter of 100 mm and a height of 2.5 meters, and 6 electromagnetic coils with a magnetic field strength of 300-500G (Gauss) are fixed outside it. After the feeding was completed, the water inlet was opened so that the water flow rate was 200L / h, and the magnetic field strength was controlled at 400G. The contents of iron and carbon in the samples separated at different times were shown in Table 1.

[0015] Inlet flow

example 2

[0017] The operation steps are the same as example 1. Control the influent flow rate to 200L / h, the magnetic field strength to 340 Gauss, and run for 35 minutes in the top carbon sample, the carbon mass is 290g, the iron mass is 4.5g, the iron mass in the bottom iron sample is 655g, and the carbon mass is 11.2g , the carbon content in the bottom iron sample is 1.68%.

example 3

[0019] The operation steps are the same as example 1. Control the water flow rate to 140L / h, the magnetic field strength is about 400 Gauss, and the carbon sample that runs for 50 minutes has a carbon mass of 285g and an iron mass of 2.5g. In the iron sample at the bottom of the tower, the iron mass is 680g and the carbon mass is 28.5g. The carbon content in the bottom iron sample is 4%.

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Abstract

A process for separating iron and carbon from the dusted ash features that its apparatus is composed of mixer, water tank, delivering pump, electromagnetic separation tower, filter and drier, and includes such steps as mixing the dusted ash with water, pumping the suspension in separation tower from its top, delivering water into the separation tower from its bottom, magnetic separation of iron from carbon, discharging the carbon contained suspension from tower top, filtering, drying to obtain carbon product, discharging the iron contained suspension from tower bottom, filtering and drying to obtain iron product.

Description

technical field [0001] The invention relates to a method for separating iron and carbon from dedusting ash, which belongs to the dedusting ash separation technology. Background technique [0002] Iron and steel enterprises will discharge a large amount of "three wastes" during the production process, among which the discharge of kiln tail ash (also known as dust removal ash) is very large. If 15kg of kiln tail ash is discharged for every ton of steel produced, based on an annual output of 80 million tons of steel, the annual discharge of kiln tail ash can reach 1.2 million tons. The accumulated and flying kiln tail ash has caused serious pollution to the factory area and the surrounding environment, and has also caused great harm to the ecological environment such as farmland. Therefore, the development and utilization of kiln tail ash has attracted people's attention. Developed countries such as the United States and Japan attach great importance to the treatment of kiln ...

Claims

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Application Information

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IPC IPC(8): B03B7/00
Inventor 谭俊茹宋宽秀颜秀茹赵乃勤王建萍曲建强
Owner TIANJIN UNIV
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