Advanced operating method for underflow pump of ore pulp pipeline transportation system

Abstract

The invention discloses an advanced operating method for an underflow pump of an ore pulp pipeline transportation system, belonging to the technical field of pipeline transportation. The underflow pump delivers acceptable concentration of ore pulp concentrated by a concentration basin to an ore pulp storage tank; when the concentration of the ore pulp is not acceptable, the underflow pump returns the ore pulp to the concentration basin for continuous concentration; when the ore pulp pipeline transportation system does not realize the designed capacity, an HV1084 valve at a height of 16 meters needs to be operated frequently to switch the process; the HV1084 valve is moved to a height of 6 meters from the height of 16 meters; the acceptable concentration of ore pulp is continuously poured into an agitating tank according to the change of the concentration of underflow; and the operating method is summarized as a nine-word operating method, namely observing the ore, seeing the concentration and regulating the frequency. The improved operating method for the underflow pump has good economic benefit and good social benefit, and totally 188,772 Yuan of capital can be economized every year; and meanwhile, with the operating method, the labor intensity of workers is lowered, and a good operating experience is provided for the operation of the underflow pump in future in case the iron concentrate pulp pipeline transportation system does not realize the designed capacity.

Description

Technical field: [0001] It belongs to the technical field of pipeline transportation. Background technique: [0002] The iron concentrate slurry pipeline transportation system is a long-distance pipeline transportation process. The iron concentrate slurry with a weight concentration of 30-45% from the iron ore base needs to be concentrated in the concentration pool. The underflow centrifugal pump with frequency converter pumps the concentrated pulp with a concentration of 70±2% in the thickening tank to two pulp storage and stirring tanks. Then the centrifugal feeding pump feeds the slurry from the stirring tank to the main pipeline piston diaphragm pump with constant suction pressure. Three main pipeline piston diaphragm pumps pump the ore slurry delivered by the feed pump to the long-distance pipeline, and then transport it to the new filter workshop of the concentrator through the pipeline for filtration to obtain iron ore concentrate powder. [0003] If the pulp concen...

AI Technical Summary

Problems solved by technology

[0005] (1) The concentration of the bottom flow in the thickening tank changes frequently, and the switching of the HV1084 valve will be frequent, and in the small cycle process, it is easy to cause the iron concentrate slurry in the thickening tank to flow into the overflow water; if the operating frequency of the bottom flow pump is too small, It is easy to cause blockage of the outlet of the underflow pump, which is not suitable for the operation and maintenance of the pump. At the same time, the ore slurry will also accumulate in large quantities at the bottom of the thickening tank, which may easily cause raking accidents.

[0006] (2) The concentration deviation of the ore pulp entering the mixing tank is relatively large, and the dilution pump needs to be frequently started and stopped to adjust the concentration, and it is not easy to control the concentration stability of the transported ore pulp

[0007] (3) Frequent operation of the HV1084 valve, the valve is easily damaged, and workers need to frequently go up to the operating platform on the top of the mixing tank at a height of 16 meters to operate, which is labor intensive

[0008] (4) The small circulation pipe from the top of the stirring tank to the thickening tank is severely worn by the ore pulp, especially the two elbows on the top of the stirring tank and the two elbows on the bottom are more serious, and need to be replaced frequently, which increases the operation and maintenance cost

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