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Potash salt ore goaf filling method

A technology for potash mines and goafs, which is applied to fillings, mining equipment, earthwork drilling and mining, etc. It can solve the problems of poor economic indicators, lower ore recovery rate, large amount of Portland cement, etc., and achieve low cost, Meet the strength requirements, the effect of less dosage

Active Publication Date: 2012-02-01
CHINA ENFI ENGINEERING CORPORATION
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Problems solved by technology

However, the traditional filling method cannot be applied to the goaf of the potash mine, because the filling strength of the goaf of the potash mine is high, otherwise the recovery rate of the ore will be reduced, and ordinary Portland cement cannot be applied to the tailings of the potash mine. Mine, and the amount of Portland cement is too large, the economic indicators are poor

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  • Potash salt ore goaf filling method
  • Potash salt ore goaf filling method
  • Potash salt ore goaf filling method

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Embodiment Construction

[0014] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0015] Refer below figure 1 A filling method of a potash mine goaf according to an embodiment of the present invention is described.

[0016] Such as figure 1 As shown, according to the filling method of potash mine goaf of the present invention, firstly, the potash ore obtained by dry mining is beneficiated to obtain the tailings of potash ore.

[0017] Then mix and stir the magnesium cement, the tailings of potash ore, and water if necessary to form filling slurry. For example, in an example of the present invention, the tailings of...

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Abstract

The invention discloses a potash salt ore goaf filling method, including the following steps: potash salt ore is subject to mineral separation, so as to obtain potash salt ore tailing; magnesium cement and the potash salt ore tailing are mixed and stirred into filling pulp; and the filling pulp is conveyed to potash salt ore goaf. According to the potash salt ore goaf filling process of the invention, pulp made by mixing magnesium cement and tailing is taken as filling main material, as the magnesium cement is mainly magnesium oxide, magnesium oxide water soluble magnesium salt is taken as gelling material, then water is added for blending, and air hardening gelled body, thus meeting the strength requirement of goaf filing.

Description

technical field [0001] The invention relates to a goaf filling method, in particular to a goaf filling method of a potassium salt mine. Background technique [0002] There are two traditional mining methods for potash mines, water mining and dry mining. Water mining does not have the problem of goaf filling. Dry mining is to process potash ore to obtain concentrate and tailings. The tailings contain more than 90% NaCl, and the obtained tailings are usually stacked in the mining area. [0003] With strict environmental protection requirements, potash mine tailings cannot be stacked on the ground, nor can it be discharged. Therefore, the use of dry mining to exploit potash mines is limited. In ordinary mining, gobs are usually filled with Portland cement as a cement and mixed with tailings to form a filling slurry. However, the traditional filling method cannot be applied to the goaf of the potash mine, because the filling strength of the goaf of the potash mine is high, ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F15/06C04B28/30C04B18/12
CPCY02W30/91
Inventor 伍绍辉李国政丁鹏贺茂坤施士虎朱瑞军
Owner CHINA ENFI ENGINEERING CORPORATION
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