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Loss-dilution controlled blasting method in open-pit metal mines

A technology for controlling blasting and open-pit mines, applied in blasting and other directions, can solve the problems of high blasting cost, limited effect, loss and dilution of difficult ore, and achieve the effect of avoiding mutual mixing, avoiding loss or dilution, and avoiding loss of ore

Active Publication Date: 2015-08-12
福建省新华都工程有限责任公司
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AI Technical Summary

Problems solved by technology

Although this method can reduce the loss and dilution of ore, the effect is relatively limited, and it is still difficult to control the loss and dilution of ore more thoroughly, and the cost of blasting is relatively high

Method used

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  • Loss-dilution controlled blasting method in open-pit metal mines
  • Loss-dilution controlled blasting method in open-pit metal mines
  • Loss-dilution controlled blasting method in open-pit metal mines

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Embodiment Construction

[0038] The invention provides a blasting method for loss and depletion control in an open-pit mine. In the method, blastholes are respectively arranged in the distribution area of ​​ore and rocks, and each blasthole is blasted sequentially according to the moving direction and delay time set by the blasting design. Throw ores and rocks to different areas, and form independent explosive piles.

[0039] Optionally, a digital electronic detonator is used as the detonating device in the blast hole, and the digital electronic detonator itself has no delay time, and the delay time can be set arbitrarily according to the needs of the blasting, including being used for digital electronic detonator identity registration and extension Time-setting IB tables, detonators and digital electronic detonators for detection and detonation of blasting networks, and blasting design software for blasting network design are also included. The delay time is set for each blasthole according to the de...

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Abstract

The invention provides a loss and dilution controlled blasting method for an open metal mine, which is characterized by distributing blast hole nets in the distribution regions of ores and rocks respectively, blasting each blast hole successively according to the moving direction and the delay time set according to blasting design, and respectively casting the ores and the rocks to different regions to form mutually independent blast piles. The blasting method not only can reduce the loss and dilution in ore mining, but also is convenient for subsequent loading transportation, and the cost of selection is lowered.

Description

technical field [0001] The present application relates to blasting technology for open-pit mining, in particular to a blasting method for controlling loss and dilution of metal ore in open-pit mines. Background technique [0002] The loss of ore refers to the reduction in the number of ore during the mining process, resulting in a waste of resources. The dilution of ore means that waste rock is mixed into ore, or low-grade ore is mixed into high-grade ore, which reduces the grade of ore and increases the cost of beneficiation. During the mining process, waste rock is mixed, high-grade ore powder is lost, and useful components Oxidation or precipitation are depletion. [0003] Blasting in the mixed distribution area of ​​ore and rock can cause ore loss and dilution. For example, ore is thrown into the waste rock pile by excessive blasting, and waste rock is mixed into the ore. [0004] Blasting in areas where ore and rock are mixed needs to be scientifically designed to red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42D1/00F42D3/04
Inventor 薛世忠
Owner 福建省新华都工程有限责任公司
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