5results about How to "Improve beneficiation efficiency" patented technology

The utility model relates to a kind of fine particle grade mineral medium spiral chute ore-dressing equipment, including spiral chute, the internal flow guide mechanism of spiral chute is provided, the flow guide structure includes two spiral tracks and a flow guide box, two the spiral track is respectively arranged on the outer spiral inner side wall and inner spiral inner side wall of spiral chute, the flow guide box is slidably installed between two spiral tracks by driving cone wheel, the driving cone wheel is installed in flow guide box both sides, the flow guide box both sides are connected with clamping plate, flow guide roller is rotatably connected between two the clamping plate, the flow guide roller is in contact with spiral chute inner bottom surface.This equipment is combined ingeniously by spiral chute and flow guide mechanism, can make mineral evenly distribute on spiral chute and continuously flow with water flow, so as to realize the efficient flow guide and accurate sorting of mineral.

The utility model relates to an automatic material distributing device of a mineral separation crushing system, which comprises a turning plate, a motor and a support, the bottom of the turning plate is sleeved with a shaft rod in parallel. Bearings are fixed to the two ends, close to the turning plate, of the shaft rod respectively. One end of the shaft rod is sleeved with a rotating structure; one end of the rotating structure is telescopically connected with the hydraulic cylinder; one end of the hydraulic cylinder is connected with an electrical circuit of the motor; the bottom of the motor is fixedly connected with a support; a control box is arranged on the plate face of one side of the support. One end of the motor is connected with a control system in the control box through a motor control line, and the device does not need to be manually operated for a long time, so that the labor intensity of workers is greatly reduced. And meanwhile, the problem of inaccurate material distribution caused by factors such as artificial fatigue is solved through automatic control, the stability and accuracy of material distribution operation are improved, and then the beneficiation index can be improved.

The present application relates to the technical field of phosphate ore dressing, and particularly relates to a continuous positive and reverse flotation method for medium and low grade phosphate ore. The preliminary separation of phosphate ore and gangue ore is realized through 'two-stage crushing-gradient magnetic separation-cyclone classification', then the tailings of magnetic separation and coarse-grained phosphate ore are re-ground by a tower mill, and then 'positive flotation-reverse flotation-reverse flotation again' is carried out on the coarse phosphate ore based on a micro-bubble flotation column. In the positive flotation stage, combined depressants are used to efficiently depress gangue minerals such as quartz and dolomite, in the reverse flotation I stage, carbonates are deeply removed, in the reverse flotation II stage, an activator is introduced to improve the adsorption activity of silicate impurities, and silicate minerals are deeply removed, so that the efficient flotation of medium and low grade phosphate ore is realized. The flotation method provided by the present application effectively improves the flotation efficiency of medium and low grade phosphate ore, improves the quality and recovery rate of the concentrate, and achieves good flotation effect.

The invention discloses a mining method for grade-divided pseudo-inclined mining, separation, separate filling and gently inclined medium-thick phosphorite, and relates to the technical field of underground mining of non-metal ores, the mining method comprises the following steps: dividing an ore body, and arranging along the trend of the ore body in a segmented and middle-section manner; mining preparation cutting is conducted, a middle-section haulage roadway, an air return roadway and a connection roadway are arranged, tunneling cutting is conducted to go uphill, and crushing and sorting equipment is integrated; pseudo-inclined grade-divided layered stoping is carried out, differential ore breaking is carried out through horizontal shallow holes in the upper layer and fan-shaped medium-length holes in the lower middle portion, and combined supporting is matched; partitioning and grading filling, retaining wall and water filtering system building, tailing reuse bottoming, and strip chamber and pillar differential lime-sand ratio filling; and finally, fully mining and fully filling the chambers and the pillars in sequence. The mining method provided by the invention can improve the ore resource recovery rate of gently inclined phosphorite, reduce the dilution rate, improve the mining efficiency, enhance the safety, reduce the production cost, promote environmental protection and the like, and has important significance for efficient, safe and environment-friendly mining of gently inclined phosphorite resources in China.