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Online detection method for energy-saving environment-friendly laterite-nickel ore smelting shaft furnace smelting slag

A technology for laterite nickel ore, energy saving and environmental protection, applied in the field of on-line detection of laterite nickel ore smelting slag, laterite nickel ore shaft furnace smelting, can solve the problems of poor representativeness, large error, and inability to adjust furnace charge formula, etc., to achieve strong representativeness, The overall error is small and the effect of improving the production process

Inactive Publication Date: 2013-03-20
FUSHUN HANKING DRI CO LTD
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AI Technical Summary

Problems solved by technology

The formula of the furnace charge cannot be adjusted in time according to the composition of the slag
In addition, the laboratory analysis only extracts a very small part of the amount of slag, and the analysis results of this small part of the sample reflect the entire shaft furnace smelting slag, which has poor representativeness and large errors

Method used

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  • Online detection method for energy-saving environment-friendly laterite-nickel ore smelting shaft furnace smelting slag

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Experimental program
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Effect test

Embodiment Construction

[0013] 1. Before removing the slag, check the water system, belt conveyor, neutron element analyzer system, jog operation status, if there is no abnormal problem, start the system operation, and start slag removal.

[0014] 2. The slag is taken out from the energy-saving and environment-friendly shaft furnace of the laterite nickel mine, automatically enters the granulator, undergoes forced rapid cooling, and rolls down on the belt conveyor. After cooling, the slag is controlled below 100°C.

[0015] 3. The belt conveyor sends the charge to the neutron element analyzer for analysis. Before entering the element analysis, the temperature of the slag is controlled below 60°C.

[0016] 4. The analyzer detects and analyzes according to the program, and transmits the data to the relevant receiving department.

[0017] 5. The detected slag is transported to the designated storage yard through the belt conveyor.

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Abstract

The invention discloses an online detection method for energy-saving environment-friendly laterite-nickel ore smelting shaft furnace smelting slag, belonging to the field of ferronickel production. The method comprises the following steps of: cooling the shaft furnace slag by a granulator; after the temperature is below 60 DEG C, conveying the shaft furnace slag into a neutron activating element analyzer by a belt conveyor to perform online detection on the shaft furnace slag; analyzing and processing a detection signal by a processor to obtain the element content; transmitting the data of element content to related enterprises to receive the data for use, directly conveying the furnace slag to a furnace slag storage yard by the belt conveyor. The shaft furnace slag is detected and analyzed by an online detection device, so the method has the advantages of high analysis speed, quick feedback, strong representativeness, little overall error, safety and reliability and high degree of automation, and does not need extra testers or extra furnace slag chemical analysis medicines. Through the energy-saving environment-friendly online detection device of shaft furnace smelting slag of laterite-nickel ore, the recovery rate of metal nickel can be obviously improved, and the production cost is lowered.

Description

technical field [0001] The invention belongs to the field of ferronickel production, in particular to an on-line detection method for laterite nickel ore smelting slag, which is suitable for laterite nickel ore shaft furnace smelting. Background technique [0002] In the previous production process of the laterite nickel ore shaft furnace, the content of nickel and iron elements in the slag was the decisive index for determining the reduction degree of nickel and iron. Conventional slag analysis requires sampling, sample preparation, laboratory analysis, and then feedback to the production unit. The whole process takes hours or even days, and the feedback control is seriously lagging behind. The formula of the furnace charge cannot be adjusted in time according to the composition of the slag. In addition, the laboratory analysis only extracts a very small part of the slag, and the analysis results of this small part of the sample reflect the entire shaft furnace smelting sl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/00C21B3/06
CPCY02P10/20Y02W30/50
Inventor 田强张克强王强念大路陈玉荣王平
Owner FUSHUN HANKING DRI CO LTD
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