On-line test method for rock mixing rate of iron ore

Abstract

The invention relates to an on-line test method for rock mixing rate of iron ore, which is characterized by comprising the following steps of: combining an ore transport vehicle GPS positioning system with an ore GIS system having independent characteristics; automatically tracking the source of the ore by transport vehicle automatic identification devices which are arranged at each ore discharge port of a stope and along iron ore transport lines; transmitting identification signals sent by the automatic identification devices to a computer; arranging a dry separation weight tester under an ore feeding belt conveyer of a dry-type magnetic separator to test a throughput of the ore discharged by a crusher, and arranging a tailings weight tester under a tailings belt conveyer of the dry-type magnetic separator to test the throughput of the ejected rocks; converting an ore throughput signal and a rock throughput signal of the two weight testers by an A / D converter, and transmitting the converted data into the computer; automatically calculating the rock mixing rate of the extracted ore of the stope through a rock mixing rate calculation formula by the computer, and transmitting the calculated rock mixing rate to a display device in a production scheduling system for display. The on-line test method for the rock mixing rate of the iron ore is helpful for production schedulers and stope cammanders to know well the rock mixing rate of the ore of each stope, and can provide a significant basis for guiding production.

Description

technical field [0001] The invention belongs to the technical field of iron ore mixed-rock ratio detection, and in particular relates to an online detection method for iron ore mixed-rock ratio. Background technique [0002] At present, there are generally two kinds of pre-selection processes for iron ore in iron mines. One is to set the iron ore pre-selection process in the mining field, that is, after the iron ore passes through the coarse crusher and secondary crusher in the mining field, the crushed product Use a dry magnetic separator to pre-select the crushed iron ore and throw the tailings, transport the selected weak magnetic or strong magnetic iron ore to the concentrator for fine or ultrafine crushing, and then send the final crushed product to the Grinding and grading operations, the tailings of the dry magnetic separator are directly transported to the rock discharge yard; the other is to set the iron ore pre-selection process in the concentrator, that is, after ...

AI Technical Summary

Problems solved by technology

The percentage of the tailings amount of the dry magnetic separator mentioned above and the selected amount is the mixed rock rate, which is an important indicator in the production management of mining enterprises. A high rock mixed rate of ore will reduce the production efficiency of the crushing process and increase the crushing rate. The transportation cost of ore, especially for mining enterprises that set the iron ore pre-selection process in the concentrator, the increased transportation cost is very obvious

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