38results about How to "Reduce tailings" patented technology

A storage hopper temporarily stores articles supplied from above and then discharges the articles downward. The storage hopper includes a holding member of an article holding change mechanism in a storage portion. The holding member changes a state in which the articles are held in the storage portion according to a state of the articles.

A storage hopper temporarily stores articles supplied from above and then discharges the articles downward. The storage hopper includes a holding member of an article holding change mechanism in a storage portion. The holding member changes a state in which the articles are held in the storage portion according to a state of the articles.

The invention discloses a subsequent filling mining method for a large-scale underground mine. Each panel is partitioned into 3-6 continuous stopes (2) and a panel barrier (3); a panel top column (4) and a panel bottom column (5) are distributed in the vertical direction; ores (7) in panel stopes (2) fall into a stope trench (11) by blasting; a carry scraper is used for loading ores in an ore outlet feeding channel (12) through an ore outlet laneway (10), transporting the ores to a strike drive (8), and unloading the ores into a pass (14); after stoping and ore discharge are completed, milltailings are filled into a blank region through a filling laneway (15) to form a panel filling body (6); after the filling into the panel stopes (2) is completed, a hollow region formed by subsequent filling in an adjacent panel stope (2) is stoped; and after the adjacent panel stope (2) is filled, a part of the panel barrier (3) is recovered, and a hollow region formed by the panel barrier is filled, so that the hollow region is eliminated finally. According to the method, the mining strength can be enhanced by using limited ore distribution area, the production capacity is increased, and mining production and hollow region filling costs are reduced.

The invention relates to a semi-solid die casting method of a compressor wheel of a turbosuperchager and belongs to the technical field of manufacturing and semi-solid die-casting of compressor wheels of turbosuperchargers. The method comprises the steps that a semi-solid blank or slurry is pressed into or poured into a material cup of a die-casting machine; and the semi-solid blank or slurry is pressed into a mold cavity through a plunger rod by means of a sprue cavity, mold filling is conducted directly, and the compressor wheel product is obtained. The compressor wheel product prepared through the method has the advantages that the procedure is short, the amount of tailing is small, the cost is low, and the performance is excellent and has wide market application prospects.

The invention discloses a novel winding cutting knife device. The novel winding cutting knife device comprises a machine frame, a flat pushing pressing roller device, and a cutting knife assembly, wherein moving plates are arranged on two sides of the machine frame; the flat pushing pressing roller device and the cutting knife assembly are arranged on the moving plates; the cutting knife assembly comprises two groups of cutting knife mechanisms which are oppositely arranged above the flat pushing pressing roller device and under the flat pushing pressing roller device; each of the cutting knife mechanism comprises a cutting knife and cutting knife bases positioned at two ends of the cutting knife; a pushing mechanism is arranged on the cutting knife bases; two groups of guiding plates corresponding with the cutting knife mechanisms are arranged on the machine frame, and are oppositely arranged. When a printing material needs to be cut, the moving plates are moved forward; the guiding plates guide the cutting knife bases and the cutting knives to rotate around a rotating shaft; the cutting knives of the two groups of the cutting knife mechanisms relatively rotate in a closing manner; the flat pushing pressing roller device is in contact with an air bulking shaft; the two groups of the cutting knives are relatively oblique and close to the printing material, and then the two groups of the cutting knifes are pushed to move forward and fit cut, so that the printing material can be cut off. According to the novel cutting knife device disclosed by the invention, the swinging range of each of the cutting knifes is small, tail materials are shortened, the waste is reduced, besides, the cutting knifes stably move, the positioning accuracy is high, the tensile force fluctuation of a film is small, and the printing material is not liable to wrinkle.

The invention discloses a full tailing filling method in large goafs, which is realized by the technical scheme with the following steps: dividing the combination of relatively independent and adjacent single or a plurality of goafs (6) into a filling unit; building a sealed wall (8) on a tunnel (7) at the periphery of the goafs (6) of the filling unit, arranging a drain pipe (9) in the wall bodyof the sealed wall (8), and arranging an ore pulp valve (10) on the drain pipe (9); laying a tailing conveying main pipe (3) above the filling unit through an adit (2) above the goafs (6); connectingeach upper opening of the filling unit to one or a plurality of hydraulic sand filling pipes (4) through the tailing conveying main pipe (3); and discharging sand at high levels, discharging water indifferent middle sections, and filling alternately. In the invention, full tailings are used for filling the existing goafs, thereby eliminating the potential safety hazards of the goafs, ensuring the normal production of large deep well mines, saving the treatment cost, the tailing stockpiling and land acquisition cost and the drainage cost of the goafs, realizing the purpose of less-waste and no-waste exploitation, and taking an demonstration effect on constructing ecological mines.

The invention discloses an overall utilization and treating process of iron ore mine, which comprises the following steps: (1) according to a grading process, separating coarse grain ore mine from the iron ore mine, in which SiO2 is not less than 40%, wherein, the content of 0.16mm grade in the coarse grain ore mine is not more than 10%; (2) according to a magnetic separation method, recovering the iron mine from the fine grain ore mine separated by the grading process, thus obtaining a rough concentrate and a fine new ore mine; (3) performing the dehydration onto the fine grain ore mine or the fine new ore mine via a densifier and a filter to obtain a fine dry ore mine, wherein, the water content is not more than 20%; (4) discharging the fine dry ore mine to a dry ore mine storage yard or using the fine dry ore mine as industrial raw material. The invention has advantages that: valuable component can be overall recovered, the ore mine can be greatly utilized, meanwhile, zero ore discharge in the ore mine base can be achieved. Accordingly, the invention is widely used for overall utilization and safety treatment of magnetic iron ore and hematite ore mine.