Control method and control device for controlling auxiliary material and water addition to tailings
A technology for controlling equipment and auxiliary materials, which is applied in mining equipment, ratio control, chemical variable control, etc. It can solve the problems of low precision, hysteresis of mixing tank, increase of lime-sand ratio, etc., and achieve accurate total ratio, easy to realize, The effect of high mixing accuracy
Active Publication Date: 2010-04-14
CHINA ENFI ENGINEERING CORPORATION
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Problems solved by technology
The increase of lime-sand ratio increases the consumption cost of auxiliary materials, such as cement (such as cement)
[0006] Secondly, although the existing slurry continuous preparation process also utilizes the feedback of the slurry concentration discharged from the stirring tank to control the amount of water added to the stirring tank, the control effect is not very satisfactory. The main reason is that the stirring tank has hysteresis, and Lag time is also fluctuating
In addition, the daily calibration of the concentration meter under the stirring tank is inconvenient, and the accuracy is usually low
In this way, the concentration of the filling material released from the stirring tank changes greatly, which affects the filling effect.
Method used
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Embodiment Construction
[0023] 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.
[0024] 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.
[0025] Tailings are stored in the sand bin 1, and auxiliary materials are installed in the auxiliary material bin 2, such as cement (such as cement), but not limited thereto. The tailings...
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The invention relates to a control device and a method for controlling accessories and water added into filling tailings. The control device comprises a sand and water content computing unit, an initial accessories and water adding amount computing unit, an actual accessories and water adding amount detecting unit, a compensator, a set accessories and water adding amount computing unit, and an accessories and water adding control unit; and the control device is used for correcting set accessories adding amount by using actual accessories adding amount and controlling the amount of added accessories based on the corrected set accessories adding amount, and correcting set water adding amount by using actual water adding amount and controlling amount of added water based on the corrected setwater adding amount. The control device effectively overcomes the defects of large actual fluctuation of concentration of filling and higher accessories consumption cost by a continuous preparation 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 of the filling.
Description
technical field [0001] The invention relates to a control device and method for controlling the concentration of filling slurry, in particular to a control device and method for controlling the addition of auxiliary materials and water to tailing sand 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 continuously sent in...
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IPC IPC(8): E21F15/08G05D21/02
Inventor 施士虎穆志纯白光辉
Owner CHINA ENFI ENGINEERING CORPORATION