How to scientifically mine

The mass distribution of ore in any mine within the scope of a full deposit is always uneven. In order to ensure normal production and beneficiation plant, good technical and economic indicators, selected ore requirements of quality indicators must be balanced and stable. To this end, in general, the ore is blended and mixed. The method is to build a blending and mixing yard, or to use a simple blending and mixing facility. When the ore blending and mixing yard is used, the ore blending and mixing are carried out in the stockyard; when using the simple blending and mixing facility, the ore blending is usually in the mining yard, on the rough front bridge or in the concentrate bin. Carry out; mixing is carried out during crushing, screening and transportation.

2. Allocating and mixing in various situations

(1) Mineralization and mixing in the mine face According to the requirements of the ore dressing quality index of the ore dressing, according to the mine geological data, combined with the mining actual mining design. According to the design, the mining section is selected reasonably, the number of mining heads, the order and proportion of mining are considered, and the factors such as the surrounding rock are mixed. The different quality ores produced are loaded according to the design requirements of the ore, and the ore is determined according to the determined formation plan. It is sent to the coarse crushing trestle of the concentrator. According to the basic characteristics of the ore and the optional test results, the method of blending and mixing the car is carried out, and then it is crushed, sieved, stored, unloaded and transported. The ore is further mixed to meet the quality requirements of the ore selected in a certain period.

(2) Distribution and mixing in the ore dressing yard of the ore dressing plant Some ore dressing plants have more types of ore (or purchased ore) from different mines, and the quality indicators are different. The ore is transported separately to the ore processing plant after the ore dressing yard. According to the basic characteristics and optional test results of various ores, the ore is selected in a certain period, and some ore is selected in a certain period. After the expiration, the ore quality is balanced and stable to meet the process requirements of the concentrator. Another more commonly used method of ore blending is the layering method, in which the ore used in the ore yard is piled up into a plurality of mutually parallel, overlapping layers as required. The weight of the layers is substantially equal, and the number of layers per pile can be several hundred layers. The layered paving itself is the ore. After the pile is formed, all the layers are cut from the pile perpendicular to the entire section of the layer by a reclaimer, which is an effective mixing method. Some stockyards use electric shovel for ore blending and mixing.

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