Backfill mining is an effective way to control ground subsidence and govern gangue. To solve the problem of thin coal seam mining under villages, a new thin seam backfill mining technology was ...

pipe and 90° elbow pipe respectively combined with the pressure loss and conveying velocity distribution. With the help of the commercial Computational Fluid Dynamic (CFD) code FLUENT, the modeling is conducted with various materials feeding velocity. These results show the local resistance loss in bending pipe is ... The cemented gangue-fly ...

The utility model discloses an automatic feeding crusher for coal gangue crushing, which comprises a supporting disc, a first motor, a second motor, a plurality of belts and the like, wherein an operating table is fixed above the right side of the supporting disc, and a feeding hole is arranged above the operating table; the top end of the operating table is provided …

The prime mover supplies the conveying air for transporting the dry feed into the separation chamber. The PMS is equipped with positive and negative pressure pumps at the feed entry and tailing discharge points, respectively, to ensure there is no pressure drop within the separation chamber. 1.1.2. Feed-air mixing and acceleration zone

Coal and gangue underground pneumatic separation is of key importance for green mining. Two kinds of arrangement schemes for high-pressure value used in pneumatic separation system are proposed in ...

The conveying performance test of coal gangue slurry was carried out, and based on this, a simulation test of coal gangue slurry caving areas was designed. The diffusion and flow laws of coal gangue slurry under the same inclination angle were summarized, and the field test of fluidization filling in the caving areas was conducted. ...

The invention discloses a seven-row-hole coal gangue baked brick production device convenient for feeding, and relates to the technical field of baked brick production devices. This seven row hole gangue baked brick apparatus for producing convenient to feed sets up through the cooperation between first push rod, first cylinder, sliding plate and the …

A kind of belt is crushed raw material from tension type gangue and rinses mixing arrangement,Including buffering warehouse,Drag conveyor,Water supply component,Strainer,The strainer includes tensioning screw,First fixed seat,Second fixed seat,The tensioning screw is along horizontally arranged,First fixed seat and the second …

Materials handling (Unloading, Storing, Feeding, Conveying ) 6. Slurry handling (Slurry transportation, Agitation and mixing) 7. Wear in operation ... entrainment of unwanted gangue can be common ...

The underground gangue washing system consists of jigging gangue removal and slime water treatment. The overall process is described as follows. Firstly, the underground raw coal passes through the grading screen. The oversize material (above …

The invention relates to the technical field of gangue separation, in particular to a dual-energy X-ray-based gangue separation device. Including X-ray identification equipment, first conveyer belt, jetting mechanism and first support, two rotate between the first support and install first conveyer belt, two the common fixed mounting of first support one end has …

practical feed flow, and rotors up to 3 m (10 ft) long, with diameters ranging from 15 to 35 cm (6 to 14 in.) give feed rates of up to 1.5 tonnes/h/l m of rotor width (1.66 tons/h/3 ft). Though feed capacities are frequently lower than this and are more commonly in the range of 0.75 to 1.2 tonnes/h/l m of rotor width (0.83 to

The utility model discloses a system for gangue finished product is carried, including primary belt conveyor and secondary belt conveyor, the one end of primary belt conveyor is equipped with finished product processing portion, and the other end of keeping away from finished product processing portion is equipped with and is equipped with the cooling …

the feed water temperature 281°C. The coal is designed into the furnace (dmax=8.5mm,d50=1.1mm) and the unloading groove mesh screen has a square hole diameter of 200mm.

A coal gangue crushing raw material feeding and mixing system comprises a buffering bin body, a scraper conveyor, a water supply assembly, a bed layer thickness adjusting mechanism, a feeding mechanism and a control mechanism, wherein the bed layer thickness adjusting mechanism comprises a scraping plate, a rack, an adjusting gear …

where θ is the collision dip angle between gangue and feeding tube (°); V n is the normal velocity of gangue before collision (m/s); V τ is the tangential velocity of gangue before collision (m/s).. Considering that the air has a smaller resistance against gangues in the initial feeding phrase, gangues can be assumed to be in freely falling …

The invention relates to a gangue-containing coal bunker waterproof coal vibration coal supply system, and belongs to the technical field of coal conveying equipment. The invention comprises a bin mouth locking gate, a guide chute and a baffle plate, wherein a high-elasticity sealing material is filled between the guide chute and a vibration trough …

3.2.2. Gangue feeding rate. The underground backfilling speed is constrained by the ground gangue feeding rate directly as well as the underground …

Download scientific diagram | Collision process between gangue and feeding tube from publication: Dynamic characteristics of gangues during vertical feeding in solid backfill …

The X-ray identification of gangue does not require separation but is necessary to avoid stacking of material that causes identification errors and reduces …

The backfilling system included the ground conveying system, vertical feeding system, underground separation system, underground conveying system and backfilling system (Hawkes and Fellers, 1969; Wijewickreme and Vaid, 1993; Yuan and Sun, 2012). The ground conveying system was mainly used to crush and transport gangue …

conveying system[14], and may adversely affect the safety and economical operation of the circulating fluidized bed unit[15]. In this paper, a 300MW circulating fluidized bed unit was taken as the research object. Coal gangue with unidentified characteristics exists in the coal, and after burned the coal, the equipment of the coal conveying

The utility model relates to an ore sorting facilities technical field especially relates to an improvement type gangue intelligence sorter pan feeding portal frame structure, including side bearer, pan feeding case, play hopper, the side bearer is provided with two altogether, and two side bearers fix respectively on the both ends of controlling of pan feeding case, …

The invention discloses a mining millimeter-level gangue slurry filling material proportion optimization and preparation method, and belongs to the technical field of filling materials. Firstly, testing the physicochemical properties of gangue raw materials, analyzing the particle size distribution, microscopic morphology and chemical structure of the gangue, …

According to the process of transporting gangues from surface to underground, gangues are transported by surface belt conveyor before dumped into …

Overall, carbonate and clay compounds make up the major gangue of samples (about 98 vol.%), and other mentioned gangue compounds are rather minor (less than 2%) (Fig. 3). Figure 2

The utility model relates to a waste rock conveying device, in particular to a low-pressure wind power waste rock conveying device, which comprises a feeding channel shell, wherein a conveying belt is arranged inside the feeding channel shell, and a plurality of groups of buffering rotating roller assemblies which are distributed in an array manner …

The utility model discloses a coal gangue and sludge feeding mechanism, which belongs to the technical field of coal gangue feeding and comprises a guide frame, wherein a support frame is arranged on one side of the guide frame, a material conveying hopper is arranged at the upper end of the support frame, a material feeding hopper is arranged on one side …

A kind of broken raw material feeding buffering automatic control equipment of gangue,Including buffering warehouse,Drag conveyor,Water supply component,Feed mechanism,Control mechanism,Tapping channel is opened up in the right sidewall of buffering warehouse,At the top of buffering warehouse, feeding hopper is set,Water …

The utility model provides a platform is carried in pay-off of gangue hollow brick pile up neatly, relates to gangue hollow brick production facility field, include: the device comprises a device bracket, wherein a material placing table is arranged at the upper part of the device bracket, conveying rollers are arranged on the material placing table and driven by a …