Control method and control device for controlling auxiliary material addition to tailings
A technology for controlling equipment and control methods, applied in mining equipment, ratio control, chemical variable control, etc., can solve problems such as increasing the ratio of lime to sand, and achieve the effects of high mixing accuracy, easy realization and good process continuity
Active Publication Date: 2012-06-06
CHINA ENFI ENGINEERING CORPORATION
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[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The embodiments described below are used to explain the present invention by referring to the figures, and the embodiments are exemplary and should not be construed as limitations of the present invention.
[0025] The following first describes the filling system for transporting filling slurry to the goaf of the mine. figure 1 A schematic diagram of a filling system for delivering filling slurry to a mine goaf is shown. see figure 1 , the filling system mainly includes a sand bin 1, an auxiliary material bin 2, a stirring tank 3, a water injection pipeline 4, and a filling pipeline 5.
[0026] Sand tailings are stored in the sand bin 1, and auxiliary materials are housed in the auxiliary material bin 2, and the auxiliary materials are for example cement (such as cement), ...
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The invention relates to a method for controlling accessories added into mine filling tailings, which comprises: calculating dry sand amount in the tailings flowing into a stirring groove from a sand silo; setting the ratio of the accessories to the dry sand and using the ratio of the accessories to the dry sand to calculate initial adding amount of the accessories; measuring actual adding amountof the accessories; using the actual adding amount and the initial adding amount to calculate a compensation value for compensating the initial adding amount and using the compensation value to compensate the initial adding amount so as to obtain set adding amount; using the actual adding amount to correct the set adding amount; and controlling amount of the accessories added into the tailings based on the corrected set adding amount. The control method effectively overcomes the defects of large actual fluctuation of concentration of filling slurry and higher accessories consumption cost in acontinuous preparation control method, has a simple structure compared with batch manufacturing technology, and has the advantages of high lime sand blending accuracy in a batch preparation method, and good continuity and simple process in continuous manufacturing technology.
Description
Technical field: [0001] The invention relates to a control method and control equipment for controlling the addition of auxiliary materials, in particular to a control method and control equipment for controlling the addition of auxiliary materials to tailings filling in goafs of mines. Background technique: [0002] With the continuous reduction of global mineral resources, the filling method is adopted by more and more mines as a safe, environmentally friendly and low-loss mining method. Abroad usually adopts slurry batch preparation technology: in which tailings, auxiliary materials and water are weighed in advance according to a certain proportion and stirred evenly, and then sent to the goaf underground. Although this technology is easy to implement in terms of ensuring the ratio and concentration of lime-sand, the procedure is more complicated. [0003] Most of the domestic slurry continuous preparation process is adopted: the tailings, cement and water are continuous...
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IPC IPC(8): E21F15/08G05D21/02
Inventor 施士虎穆志纯
Owner CHINA ENFI ENGINEERING CORPORATION