41results about How to "Increase the settlement area" patented technology

The invention relates to a canal type thickener, which is a canal overall. Along an ore pulp flow path, the thickener includes a canal head, a canal body and a canal tail in order. Ore pulp enters a thickening pond through a feeding port, heavy particles in the ore pulp undergo preliminary settlement in the thickening pond. The low concentration ore pulp overflowing the canal head enters the canal body to undergo further settlement. When the low concentration ore pulp flows to the canal tail, it is already in a clear water state basically and enters a clear water pond, and is discharged through a drain hole. In the invention, the thickener is changed from the traditional ''round pond'' type to the ''canal type'', thus effectively solving the problem of large floor area of the thickener. The canal structure is in linear arrangement, can be subjected to buried installation, and does not take up the volume of a concentrating mill basically. With a long canal and a large actual settlement area, the structure of the thickener can be simpler, thereby effectively reducing the production cost.

The invention relates to a liquid-liquid extraction mixer-settler and an extraction method and an application thereof. The mixer-settler comprises a mixing chamber and a clarifying chamber, wherein the side in the clarifying chamber near the mixing chamber is provided with a guide pipe which extends to the tail end of the clarifying chamber from an outlet of the mixing chamber; and at least the upper part or the lower part of the guide pipe in the clarifying chamber is transversely and fixedly provided with a wedge-shaped body. As the upper part and/or the lower part of the guide pipe in the clarifying chamber is fixedly provided with the wedge-shaped body, not only is the storage amount of organic phases in the settling chamber reduced, but also a large light-heavy two-phase settling area is provided so that the clarifying phase-splitting time is prolonged, and the clarifying separation effect is remarkable for an easily-emulsifying system or a system with larger viscosity; and the mixer-settler provided by the invention can be used for single-stage continuous extraction operation or multi-stage series-connected countercurrent continuous extraction operation.

The invention discloses a continuous settling tank which comprises a shell, wherein the shell is provided with a circular cylinder at the upper part and a conical cylinder at the lower part; an overflow weir is arranged in the circular cylinder; an underflow outlet is arranged at the bottom of the conical cylinder; an arch-shaped feeding slot is arranged in the circular cylinder of the shell; the arch-shaped feeding slot comprises the inner side wall of the circular cylinder, a flat wall plate, a grid distributing plate and a baseboard; the grid distributing plate is arranged under the flat wall plate; upper and lower ends of the grid distributing plate are respectively fixedly connected to the flat wall plate and the baseboard; a plurality of porous guiding vanes are symmetrically and obliquely arranged outside the flat wall plate; gaps are reserved between the guiding vanes and the flat wall plate; and a rotary rake is arranged on the conical cylinder at the lower part of the shell. By using the continuous settling tank provided by the invention, the maximum settling area is supplied as much as possible, an interior space of equipment is efficiently utilized, a settling separating effect is improved, and the loss of solid materials such as catalyst can be reduced.

The invention provides a method for preparing superfine high-whiteness micro powder by removing impurities from granite fine-grained stone powder in a full-grained manner. The method comprises the following steps: (1) taking granite saw mud or stone powder as raw ore, firstly performing slag separation and classification on the raw ore to realize material scattering and removal of oversize particles, and then performing two-stage magnetic separation to remove mechanical iron impurities, mica and weak magnetic substances to obtain a non-magnetic substance; (2) performing fine classification onthe non-magnetic substance in the step (1) according to the particle size requirement to obtain a fine-grained product and a coarse-grained product; (3) performing high-field-intensity magnetic separation on the coarse and fine products respectively; and (4) preparing micro powder. According to the method, a pollution-free environment-friendly physical technology and a low-temperature superconducting magnetic separation technology are adopted, so that the technical problems of magnetic separation and iron removal of fine particles and energy conservation and consumption reduction of superfinepowder prepared by non-metal ore are solved, and large-scale consumption and high-value utilization after impurity removal and whitening of the granite saw mud and stone powder are realized. Comparedwith a traditional impurity removal and whitening process, the method has the advantages that the product whiteness is improved by 15 20 degrees, the yield is improved by 23 25%, and compared with a traditional process for preparing powder from ore, crushing and ore grinding are not needed.

The invention discloses a comprehensive force field multithread gravity concentrator. The gravity concentrator comprises a gravity concentrator main body, a comprehensive force field precipitation separation area, a driving device, a rotation device and a pulsation device, wherein the rotation device and the dithering device are arranged at the lower part of the gravity concentrator main body, and enable the lower part of the gravity concentrator main body to form the comprehensive force field precipitation separation area under the combined action of a turbulence fluid field and a pulsation force field; the rotation of the rotation device is driven by the driving device; a feeding opening is formed in the central area at the top of the gravity concentrator; the feeding opening is communicated with the comprehensive force field precipitation separation area at the lower part through a central feeding pipe; an underflow opening is formed in the bottom of the comprehensive force field precipitation separation area; the upper part of the comprehensive force field precipitation separation area is communicated to the overflow dam part at the top of the gravity concentrator main body through an upstream passage encircling the central feeding pipe; baffle board components are uniformly arranged in the upstream passage to form an inclined board settling area. The gravity concentrator has the advantages that the gravity concentrator is high in sorting accuracy, stable and reliable in work, low in energy consumption, and environment-friendly.

Disclosed are a gravity classification and immersive screen combined classifying method and a device utilizing the same. Interference settlement, shallow settlement and screening classification are combined by arrangement of immersive screens, a water raise pipe and inclined plates. Materials are classified by a first screening classification chamber, an interference settlement classification chamber, a shallow settlement classification chamber and a second screening classification chamber in a multiple stage manner, so that classification effect of the materials is enhanced. Since fluid pressure provides power for classification of the materials, classification effect is enhanced further while power loss is saved. The adaptability of the device to flow states of fed materials is improvedgreatly. The usage of raise water is reduced, and the unit area treatment capacity and classification efficiency of the device are improved. The overflow grain size is controlled severely. The devicehas the main function of classifying and the auxiliary function of screening, and is simple and compact in structure, small in floor area, simple in operation method and wide in practicability.

The invention provides a mixed type foundry waste sand wet reclamation wastewater processing method. Firstly, wastewater is demulsified, and large suspended matters in the wastewater are flocculated in a spiral flocculating tank by virtue of an inorganic flocculating agent; then small suspended matters are flocculated by virtue of an organic flocculating agent; through standing sedimentation in an inclined tube sedimentation tank, a flocculation layer forming at the bottom in a condensed manner is extracted through a sludge pump at the bottom of the sedimentation tank; the organic flocculating agent is secondarily used, and finally, a band type concentration-vacuum-filter pressing all-in-one machine is used for treatment, so that the water content of sludge discharged at an outlet of a filter cake of the band type concentration-vacuum-filter pressing all-in-one machine is less than 40%; therefore, supernate overflowing from the inclined tube sedimentation tank and clear water from a clear water outlet of the band type concentration-vacuum-filter pressing all-in-one machine can achieve the requirement for production cycle water and the standard for direct discharge.

The invention discloses a forced reaction coagulation clarification system capable of realizing intelligent regulation and control. The system comprises a clarification tank, a forced coagulation regulation and control unit and an analysis unit and is particularly applicable to the operation condition of frequently fluctuant water inflow. According to the system operation condition monitored and collected in real time by each functional module, the analysis unit accurately calculates the sludge generation amount of the clarification tank and the flocculation reaction degree of mixed liquid ina reaction area, analyzes the real-time operation state of the clarification tank and takes corresponding regulation and control measures. Through the forced coagulation regulation and control unit, the flocculation crystal nucleus quantity and sludge discharge amount of a forced coagulation reaction are accurately regulated and controlled, an optimized forced coagulation reaction environment is constructed, the growth and adsorption precipitation of flocculation crystal nuclei are effectively controlled, and it is ensured that the physical and chemical properties of floc in the reaction areastay in a good stable state. The system realizes automatic control over the intelligent and precise forced coagulation reaction environment, automatic control over the discharge of residual sludge, automatic control over a flushing device and the like and ensures the stable operation of the clarification tank, the effluent quality of the system is improved, and the operation benefits of the systemare increased.

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 discloses a sewage pretreatment method and a denitrification-anaerobic hydrolysis sedimentation tank and relates to a sewage pretreatment method and a denitrification-anaerobic hydrolysis-acidation device. The method and the sedimentation tank solve the problems that the prior sewage pretreatment method has poor treatment effect and high cost and the sludge in the prior denitrification-anaerobic hydrolysis sedimentation tank floats upwards to influence water quality. The method comprises the following steps: firstly, treating the sewage through a coarse grille, a middle grille, a rotating drum type thin grille and a rotational flow grit chamber; and secondly, hydrolysis-acidation treatment, namely, realizing pretreatment of the sewage. The denitrification-anaerobic hydrolysis sedimentation tank consists of an effluent weir, a top cap, a honeycomb inclined pipe component, a clear water zone, a suspended silt zone, a mud bucket, a water inlet pipe and a mud pipe. The method has good treatment effect and low cost for sewage pretreatment; and the denitrification-anaerobic hydrolysis sedimentation tank solves the problem that the sludge floats upwards to influence the water quality. The invention provides a pretreatment method for an aeration biological filter, and can ensure stable operation of the biological filter and the water quality of the yielding water.

The invention discloses an efficient flocculation thickener. The efficient flocculation thickener comprises a shell body and bridge piers, wherein the shell body is arranged on two adjacent groups ofthe bridge piers; a bridge frame is arranged at the upper end of the shell body; a main shaft is arranged at the middle position in the shell body; a driving device is arranged at the upper end of themain shaft; a flow stabilization barrel is arranged at a part, close to the top end, of the outer surface of the main shaft; a supporting barrel is arranged on the outer surface of the flow stabilization barrel; the flow stabilization barrel and the supporting barrel are coaxially arranged through the main shaft; overflowing holes are formed in positions above two sides of the shell body; a shortrake is arranged at a part, close to the bottom end, of one side of the main shaft; a long rake is arranged at the bottom end of the other side, corresponding to the short rake, of the main shaft. The efficient flocculation thickener disclosed by the invention is provided with a material push plate and an inclined flow plate, so that the discharging smoothness of slurry in the device is ensured,a precipitation distance of ore grains is shortened, the precipitation area is enlarged and a better application prospect is brought.

The invention discloses a spiral conveyor with auxiliary blades. A hollow inner barrel is provided with a conical section and a straight barrel section, a feeding hole is formed in the pipe wall close to the conical section, spiral blades are arranged at the periphery of the inner barrel, the plurality of auxiliary blades are arranged between the spiral blades, the width of the auxiliary blades is smaller than the pitch of the spiral blades, and every two adjacent auxiliary blades are arranged in a spiral channel space in a staggered manner to form a zigzag flow channel. The auxiliary blades are additionally arranged between the spiral blades and rotate along with the inner barrel, solid particles of suspension liquid entering the spiral conveyor are separated from a liquid phase under the action of a huge centrifugal force field, and the manner that the liquid is driven to rotate only through the spiral blades originally is changed through the auxiliary blades. The auxiliary blades drive the suspension liquid entering the space between the inner barrel and an outer barrel from discharging holes, so that the centrifugal force and the rotating speed can be immediately obtained, the solid-liquid two-phase separation is accelerated, and the separation efficiency is improved. Meanwhile, the auxiliary blades also increase the equivalent sedimentation area, so that a better separation effect is achieved.

The invention relates to a novel domestic sewage treatment method. The treatment method mainly aims at excrement sewage of a toilet. The mode combining activated sludge biodegradation, inclined tube sedimentation and physical disinfection and sterilization is used. The method mainly comprises the four steps of anaerobic treatment, aerobic treatment, sedimentation treatment and disinfection treatment in sequence. The method can effectively remove nutrient substances such as nitrogen and phosphorus in domestic sewage and remove bacterial viruses such as escherichia coli, and is clean, sanitary,free of peculiar smell and capable of efficiently treating sewage. The quality of the treated water can reach the secondary emission standard of municipal sewage treatment plant pollutant emission standards. The treated water can be used for toilet flushing; in addition, reclaimed water can be recycled, circulating water flushing can be achieved, and water resources are greatly saved.

The invention provides a channel type thickener. The thickener comprises a thickening pool, a settling basin, a desilting valve and a mud cleaning valve; wherein an upper part of the thickening pool comprises a buffer pool, which is connected to the settling basin; one end of the desilting valve is communicated with a bottom part of the buffer pool, and the other end of the desilting valve is communicated with an outlet at a lower part of the thickening pool; one end of the mud cleaning valve is communicated with the front end of the bottom of the settling basin, and the other end is communicated with the outlet at the lower part of the thickening pool; liquid at the upper part of the settling basin is communicated with a drainage hole. The thickening pool, the buffer pool, the settling basin, the desilting valve and the mud cleaning valve are arranged linearly in order for condensation and treatment of tailings, and the separated clear water can be discharged or recycled for utilization on-site. The thickener has the advantages of simple structure and saved space, so that power saving and water saving are realized.