Ore blending method of strip mine production

A technology for open-pit mines and ore blending, which is applied in the fields of instruments, data processing applications, and calculations, and can solve problems such as unreasonable ore blending plan preparation, unreasonable ore supply grades, and impact on the status of production objects.

Inactive Publication Date: 2015-08-12
CENT SOUTH UNIV +2
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Problems solved by technology

Some ore blending expert decision-making systems use mathematical models to analyze problems, simplify the ore blending process, and have made some progress in the field of digital ore blending. However, they must be used in open pit ore blending production to

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  • Ore blending method of strip mine production
  • Ore blending method of strip mine production
  • Ore blending method of strip mine production

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Embodiment 1

[0060] A method for producing ore in an open-pit mine, comprising the steps of:

[0061] 1. Acquisition of explosion pile data: Obtain the scope of the explosion area, set up the blast hole, blast, obtain the blast hole database and rock powder data, and obtain figure 1 ;

[0062] 2. Constraint information on initialization of blast area ( figure 2 ), the constraint information includes step height, main propulsion direction, possible mining direction, mining width, and the size of subdivided grid;

[0063] 3. Carry out grid division according to the information of the explosion area ( image 3 ), estimate each grid separately according to the blasthole database, and obtain the ore quantity and grade of each grid, so as to know the mineable quantity and grade distribution of the explosion area.

[0064] 4. Set the ore output and ore grade limits according to the demand, and set up constraints (see Table 1, the grade is Cu 0.2-0.3, Mo 0.01-0.015, the number of ore blending ...

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Abstract

The product is a multi-mineral refined ore blending software system based on strip mine exploitation. An ore blending method of strip mine production provided by the present invention comprises the steps of: 1. acquiring blasting muck pile data; 2. initializing constraint information for a blasting area; 3. dividing grids according to information of the blasting area, and obtaining ore quantity and grade of each grid, so as to obtain allowable exploitation and grade distribution cases of the blasting area; 4. setting limitation of extracted ore tonnage and extracted ore grade according to requirements, and setting constraint conditions; and 5. obtaining a scheme of exploitation and outputting a result. Based on the current situation of a mining area, the ore blending method of the present invention performs subdivision and estimation for the blasting muck pile area, strictly controls the extracted ore tonnage and extracted ore grade, and adopts a mathematical model of linear programming to obtain a reasonable and feasible ore blending planning scheme. Through assignment of an advance direction and a digging width, a feasible scheme of the blasting muck pile area can be obtained, thereby ensuring that a production tool can operate in a limited way according to the landform. The blasting muck pile is estimated in a differential mode, so that an estimated result and the actual value are as close to identical as possible, thereby obtaining a relatively accurate result.

Description

technical field [0001] The invention belongs to the field of mining, and in particular relates to an ore blending method for an open-pit mine. Background technique [0002] The open-pit ore blending process is a dynamic and holistic process. The traditional manual ore blending relies on manual calculation by personnel, the operation is complicated, and there are too many human factors based on experience alone, which has a certain degree of blindness, which will inevitably lead to inaccurate ore blending plans. At present, there is little gap in the theoretical research of ore blending at home and abroad, and a lot of academic achievements have been made. Some ore blending expert decision-making systems use mathematical models to analyze problems, simplify the ore blending process, and have made some progress in the field of digital ore blending. However, they must be used in open-pit ore blending production to achieve the purpose of guiding production There are still many...

Claims

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Application Information

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IPC IPC(8): G06Q50/02
Inventor 王李管姚威毕林黄虎刘晓明
Owner CENT SOUTH UNIV
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