31results about How to "High underflow concentration" patented technology

The invention relates to a continuous preparation system and a preparation technology of whole grain grade tailing cemented filling slurry. The continuous preparation system mainly comprises a tailing slurry collecting buffer feeding device, a deep-cone thickener, a flocculating agent preparing and adding device, an underflow slag slurry pump, a cementing material storage bin, a cementing material measuring and conveying device, an air compression system, a water supply system, a filling accident pool, a stirring system and a filling slurry output pipeline. The preparation technology comprises the steps of conveying tailing slurry to the tailing slurry collecting buffer feeding device through the slag slurry pump, after reducing the pressure to 0.03 MPa through the collecting buffer feeding device and carrying out energy dissipation, feeding the tailing slurry into the deep-cone thickener, and adding a flocculating agent into the deep-cone thickener according to the principle that for per ton of tailing slurry, every 5 to 20 g of the flocculating agent is added, so as to obtain high-concentration tailing slurry with the concentration of 65 to 75%; and conveying the high-concentration tailing slurry and a cementing material into the stirring system according to the fact that the mass ratio of the high-concentration tailing slurry to the cementing material is 1 to (5 to 40), adding water, stirring, and preparing the mixture into the high-concentration whole grain grade tailing cemented filling slurry with the concentration of 65 to 75%. According to the continuous preparation system and the preparation technology, the system is simple, the automation degree during the preparation process is high, the operation is convenient, and the filling slurry can be continuously prepared.

The present invention relates to the deposition dewatering process of floated tail ore, and is especially the deposition dewatering process of floated tail ore of diaspore type alumyte. The present invention features that into the floated tail ore slurry, sulfuric acid or sulfate, aluminum sulfate, ferrous sulfate, zinc sulfate, copper sulfate, barium sulfate or alum in acidity after hydrolysis is first added to regulate pH value to 6.5-7.5; and polyacrylamide as organic flocculant in the amount of 0.001-0.01 % of the dry tail ore slurry weight is then added for flocculation and deposition. The present invention can raise the concentration of tail ore slurry from 6-11 % to over 25 %, reduce the overflow floated matter to below 1 g/L and make the overflow water capable of being reused.

The invention discloses a deep-cone thickener, which comprises a tank, a large frustum, a small frustum, a harrow frame, a feeder and a harrow frame lifting driving device, wherein the tank is of a cylindrical tube structure, and the upper and lower ends of the tank are respectively provided with flanges; the major-diameter end of the large frustum is upwardly connected with the flange at the lower end of the tank through the flange, and the small-diameter end of the large frustum is downwardly connected with the major-diameter end of the small frustum; the small-diameter end of the small frustum is provided with a throat and a valve device, and the flange at the upper end of the tank is connected with the harrow frame lifting driving device; a spindle of a speed reducer of the harrow frame lifting driving device is connected with a central transmission shaft of the harrow frame, and the upper end of the feeder is connected with a take-off and landing plate through a screw rod. The deep-cone thickener provided by the invention has the advantages of simple structure, low power consumption, high thickening efficiency, high underflow density, and strong adjustability, and is especially suitable for the dry heaping and dry discharge of different minerals and the tailing filling operation. The efficient concentration can be realized, and the discharge concentration of underflow of the thickener is enhanced, so that a mine mouth cannot be clogged.

The invention discloses a retractable hydrocyclone and belongs to multi-phase flow separation equipment. The retractable hydrocyclone comprises a feeding hole, an overflow pipe, a swirling chamber, a separation zone and an underflow pipe, wherein the separation zone is a main separation working part and is characterized by being formed by nested connection of a plurality of column segments with different internal diameters. The length of the separation zone of the hydrocyclone has certain influence on the separation precision. The device can adjust the length of the separation zone of the hydrocyclone according to the separation precision of materials, namely when the concentration requirement of a to-be-separated substance changes, the length of the column segments of the separation zone of the hydrocyclone can be extended or shrunk directly according to requirements to achieve use requirements, without re-designing a new hydrocyclone. The hydrocyclone is increased in handling capacity, improved in separation efficiency, increased in underflow concentration, convenient to adjust and low in cost, and is applicable to separation operations of industries including petroleum, chemical engineering, coal dressing, food, sewage treatment and the like, especially applicable to occasions with requirements for obtaining multi-phase flow substances with different concentrations.

The invention discloses a fine-fraction high-concentration tailing filling and thickening device which comprises a tank body part, a wind-water slurry making system, an underflow conveying system, an electric control system, a flocculating agent preparing and adding system and the like. The wind-water slurry making system comprises an annular water pipe group and an annular gas pipe group; annular water pipes of all layers of the annular water pipe group and annular air pipes of all layers of the annular air pipe group are located at different height positions and distributed in an inverted cone shape, the annular water pipes and the annular air pipes of each layer are respectively connected with a plurality of high-pressure rubber water (air) spraying pipes, valves and external water (wind) slurry making nozzles; and the annular water pipes are connected with a water supply and drainage header pipe, and the annular air pipes are connected with an air supply and exhaust header pipe. By means of the fine-fraction high-concentration tailing filling and thickening device, the material storage capacity is large, the mining and filling circulation efficiency of a mine is improved, no power part exists, fault points are few, power consumption is low, and the operation cost is low; and long-time continuous steady-state slurry discharging is achieved, the stability of technological parameters and the working efficiency of filling operation are improved, the concentration capacity of the thickening device is improved, and the continuity of filling operation of the thickening device is guaranteed.

The invention discloses a method for concentrating and separating two segments of low-intensity magnetic separation iron tailings to obtain ilmenite and a corresponding separation system. The method comprises the following steps: concentrating a first segment of low-intensity magnetic separation iron tailings by using a first sloping-plate thickener (10), and thus obtaining first overflow and first underflow as a coarse ilmenite raw material; mixing the first overflow with a second segment of low-intensity magnetic separation iron tailings, then feeding the mixture into a second sloping-plate thickener (20) for concentration, and thus obtaining second underflow as a fine ilmenite raw material and second overflow as slurry. The concentrations of the first underflow and the second underflow are increased, the particle size separation effect of the first underflow and the second underflow is better, and the phenomenon of coarse particle overflowing of the first overflow and the second overflow is decreased.

The invention provides an effective slurry thick and stable discharging device and method and belongs to the technical field of flocculation settling. The device comprises a cabin body, transducer carrier tubes, sound/ultrasonic transducers, a digital controller, a rotation driving device, a mixing helix tube, a flocculant tube, an overflow pipe, a barretter, a carrier tube stabilizer and a sand outlet, wherein the transducer carrier tubes are arranged inside the cabin body, the rotation drive device is arranged at the upper end of the cabin body, and thus a rotation blind-less scanning systemis formed; the sound/ultrasonic transducers are respectively arranged at a settling section, a thickening section and a discharging section in each transducer carrier tube to form a sound field destabilization granulating active region, a sound field resonant draining thickening active region and a sound field excitation liquefying discharge active region respectively, and are connected with thesound/ultrasonic transducers through transducer connecting wires; the mixing helix tube is connected with the flocculant tube and is communicated with the barretter. The device has simple structure and process, and can realize quickly thick and stable discharging of slurry.

The invention provides a deep-cone concentration machine used for acid waste water treatment in non-ferrous metal industry, which comprises a tank body, a bridge frame, a material distributor and a material feeding pipe, wherein the bridge frame (8) spans across the top of the tank body (1), the upper part of the material distributor (3) is fixed on the bridge frame (8), the lower end of the material distributor (3) extends into the cone body part of the tank body (1), the material distributor (3) is in a double-layer structure provided with an outer tube and an inner rube, the upper part of the outer tube (4) of the material distributor is a column body, the lower part of the outer tube (4) is a cone body with a smaller upper part and a larger lower part, the inner tube (5) of the material distributor is divided into several parts: an upper column section (10), an upper cone section (11) with the larger upper part and the smaller lower part, a column-shaped transition section (12) and a lower cone section (13) with the smaller upper part and the larger lower part, the top of the upper column section (10) is provided with an exhaust pipe (9), and the material feeding pipe (6) enters the upper column section (10) of the inner tube of the material distributor along the tangent line. The deep-cone concentration machine has good effect and high efficiency when being used for treating the acid waste water in the non-ferrous metal industry, and in addition, the deep-cone concentration machine has no motive power consumption.

The invention relate to a vibrating type thickener. The thickener comprises a thickener support, wherein a tank is mounted on the thickener support and formed by connecting an upper cylinder and a lower cone, an unloading port is formed in the lower end of the lower cone, a supernatant overflow groove and an overflow groove outlet are mounted in the upper periphery of the tank, a cross beam and acorridor are arranged at the center line part above the tank, a feeding channel is lifted below the middle of the cross beam, and the inclined included angle formed between the conical surface of thelower cone and the horizontal plane is 50-70 degrees; a motor and a long-column-shaped vibrating rod are mounted in the middle of the cross beam, the motor is fixed on the cross beam through a motor base, the long-column-shaped vibrating rod is hung on the cross beam through a damper spring and consists of a hollow column and 1-3 vibration exciters, all the vibration exciters are arranged along the axis of the hollow column, the vibration exciter at the top is in drive connection with the motor through a universal shaft, and every two adjacent vibration exciters are in drive connection througha universal shaft. The thickener has novel structural design and outstanding use effects.

The invention relates to a deep-cone thickening sand bin with a fluidized sand discharging device. The deep-cone thickening sand bin with a fluidized sand discharging device comprises a sand bin body,a material feeding pipe, a flocculant inlet pipe, an overflow tank, a material feeding well, a circulation well, an annular guide cone and a stirring fluidization device, wherein the overflow tank isfixedly connected to the top of the inner wall of the sand bin body, and communicates with a supernatant return pipe, the material feeding well is disposed at the center of the top of the sand bin body, and is fixedly connected with the sand bin body, and the circulation well is disposed in the material feeding well, and is fixedly connected with the material feeding well; a material feeding zoneis formed between the material feeding well and the circulation well, the material feeding pipe communicates with the material feeding zone, and the annular guide cone is disposed directly below thecirculation well, and is fixedly connected with the inner wall of the sand bin body; and the diameter of the top of the annular guide cone is the same as the diameter of the circulation well, a material outlet is formed in the bottom of the sand bin body, and the stirring fluidization device is fixedly connected with the mouth outlet. A special flow field is formed after tailings is introduced into the sand bin, no consumption of waterpower and gas power is generated, the fluidization effect is good, and it is ensured that the mortar concentration and the thickening effect are not reduced.

The invention relates to a half-deep-cone thickener. The half-deep-cone thickener is provided with a thickener support, a pool is formed in the thickener support, a beam is arranged on the upper partof the pool in the diameter direction, a feeding barrel is arranged at the center of the pool, and the pool is composed of an upper part cylinder and a lower part double cone structure, wherein the lower part double cone structure is formed by connecting an inverted large cone and an inverted small cone; a driving device is arranged on the part, located at the center of the pool, on the beam, a transmission vertical shaft which is arranged downwards is in transmission connection with the driving device, a rake device and a stirring device are arranged on the transmission vertical shaft, the rake device and the stirring device are integrated together through a flange and are driven to run by the driving device respectively and simultaneously, and the rake device is arranged in the inner space of the large cone, while the stirring device is arranged in the inner space of the small cone. The thickener is novel in structural design and obvious in use effect and has high actual use and popularization values.

The invention relates to a high-efficient thickener, comprising rakes and a power source consisting of driving motors and reducing mechanisms, wherein the power source has three sets distributed in a triangle shape, the output shaft of the reducing mechanism of each power source is provided with a small gear wheel, the small gear wheel is internally joggled with a rotary supporting disk, the rotary supporting disk is connected with a driving cage top via an external rotary table, the lower end of the driving cage top is fixedly connected with a rotary main shaft, the rakes are fixed at both sides of the rotary main shaft, the section of the rotary main shaft is a square frame, and the middle part of the rotary main shaft is provided with a steel pipe support. The invention overcomes the defects that the ordinary thickener has difficultly guaranteed transmission stationarity and small application range in the existing technology, and the supporting role for the groove wall is eliminated by the central transmission mechanism by means of the above design, thereby improving the use stability of equipment, and also being capable of being applied to deep cone groove bodies, and having the advantages of simple and compact structure, high work stability, broad application range and strong reliability.

The invention discloses an efficient tangential drainage feeding flow stabilizing device of a central transmission thickener, which comprises a tangential feeder, a bucket body, a conical distributor,a drainage plate, a distribution frame, a baffle, a servo motor and a generator; the bucket body is communicated with one end of the tangential feeder, and the inner side of one end of the tangentialfeeder is provided with the drainage plate; according to the invention, slurry passes through the tangential feeder and enters the bucket body, so that by means of the guide effect of the drainage plate, the slurry moves in the tangential direction and tangentially moves along the inner wall of the outer stop seat of the bucket body, so that the speed is gradually reduced through a plurality of baffles in sequence; after speed reduction, the materials flow to the conical distributor through the discharge port and the arc-shaped notch; slurry is uniformly distributed and enters the concentration tank and the central transmission thickener to be efficiently and tangentially guided into the feeding and flow stabilizing device; therefore, the materials can be effectively mixed and are dispersed and fed through the conical distributor to achieve the optimal effect, so that the purpose of improving the underflow concentration of the central transmission thickener is achieved on the premisethat the deposition effect is not affected.

The invention relates to a feeding guide plate of a novel thickener. The feeding guide plate comprises an umbrella-shaped cylinder, a circular ring and a fixed shaft sleeve; the feeding umbrella-shaped cylinder of the novel thickener is circular truncated cone-shaped and is located at the position which is under a central feeding cylinder of the thickener and is away from the bottom end of the central feeding cylinder by 300-400mm; the umbrella-shaped cylinder is fixed together with a main shaft rake of the thickener by the fixed shaft sleeve, so that ore pulp goes into the thickener in the horizontal direction and flows to the four directions dispersively, and therefore, a stable sedimentation layer can be formed, the efficiency of the thickener is improved, and meanwhile, the cutting-out of the fed ores and the bottom flow is also prevented, the concentration of the bottom flow is increased and the dehydration effect is improved.