TBS transformation and upgrading method

Abstract

The invention relates to a TBS transformation and upgrading method. According to the TBS transformation and upgrading method, an underflow box and an automatic regulating valve are installed at the bottom of a TBS interference bed sorting machine, and densitometers are added in the sorting machine; by detecting values of the two densitometers and by automatic analysis and calculation, a determination result on bed layer stability in a sorting machine barrel is output to serve as the basis of movement of a bell-shaped discharging valve through an executing mechanism; and the average of the two densitometers is detected to serve as the control basis of an automatic regulating valve at the bottom of the underflow box. Through dual valve control, a problem that the when the executing mechanism moves for a small stroke, plenty of materials are output or when the executing mechanism moves for a large stroke, no discharging is performed is effectively solved, the whole discharging process is smoother, and the bed layer density of the sorting machine is more stable.

Description

technical field [0001] The invention belongs to the technical field of coal preparation, and in particular relates to a method for upgrading a TBS coarse coal slime (other mineral or water treatment) interference bed sorter. Background technique [0002] At present, the commonly used coarse slime separation equipment in my country mainly includes spiral separator and TBS coarse slime interference bed separator. Among them, the spiral separator is not suitable for coking coal separation due to its high separation density and low processing capacity; TBS has been widely promoted in domestic coal preparation plants due to its simple system, but its separation accuracy is far lower than that in recent years The newly developed TCS intelligent coarse slime separator, so how to transform and upgrade TBS has become a new topic. According to the feedback results from users, in practical applications, TBS has the following problems. [0003] 1. TBS is discharged through a bell-shap...

AI Technical Summary

Problems solved by technology

[0003] 1. TBS is discharged through a bell-shaped or conical discharge valve. Its working principle is intermittent discharge according to the feedback value of the density meter, which cannot realize continuous and stable discharge of TBS tailings with a small flow rate

The sorting accuracy is much lower than the TCS intelligent coarse slime sorting machine successfully developed in recent years

[0004] 2. Due to the special structure of bell-shaped or conical discharge valve, TBS has high requirements on the transmission accuracy of the actuator, which brings high cost and regular maintenance requirements.

Due to the poor conditions in various aspects of the coal preparation plant, frequent failures of the actuators seriously restrict the normal production

[0005] 3. The density distribution in the TBS sorting cylinder is not completely uniform on the same horizontal plane, but in the production process of TBS, only one density meter detection value is used to control the actuators at three different positions, which cannot guarantee the stability of the bed in the cylinder, or even will exacerbate bed disturbance

[0006] 4. TBS completely relies on self-generated media to achieve separation, mismatches will occur during the production process, and there will be coal running, which is not conducive to the recovery of concentrates

[0007] 5. TBS intermittent discharge, when the discharge volume is large, the bed layer moves up and down, and the sorting efficiency is reduced; when the discharge interval is too long, or encounters coarse running, TBS is easy to block the discharge port

Images