40results about How to "Reduce production handling costs" patented technology

The invention belongs to the technical field of efficient development of ultralow-grade ore resources and comprehensive utilization of associated minerals, and in particular relates to a combined beneficiation method and a combined beneficiation system for comprehensive recovery of associated iron-phosphate minerals. The combined beneficiation method for the comprehensive recovery of the associated iron-phosphate minerals comprises the following steps: sequentially performing three-section and two-closed-loop crushing and screening flow on raw ores, and performing dry separation to obtain fine ores; performing two-section closed-loop ore-grinding flow on the fine ores, performing fine magnetic separation for three times, and concentrating by using a wash mill to separate iron ore concentrate and discharge tailings; performing one-time roughing, one-time scavenging and three-time concentrating on the tailings at the temperature of 10-15 DEG C to obtain phosphate ore concentrate by floatation. Compared with the prior art, the invention provides a comprehensive recovery scheme for magnetic iron ore resources and phosphate ore resources in ultralow-grade associated iron-phosphate minerals. According to the scheme, the separation cost is low, the efficiency is high, energy is saved, the space occupation is low, and the comprehensive recovery of the magnetic iron ores and the phosphate ores can be realized.

The invention discloses a method for preparing cold ramming paste for electrolytic aluminum. The method comprises the following steps of: crushing and ball-milling one or more mixed aggregates and feeding the aggregates into screening equipment to obtain aggregate powder with particle diameter of between 50 and 300 microns; meanwhile, heating and melting one or more mixed adhesives to obtain adhesive melt; then pouring the aggregate powder and the adhesive melt in a weight ratio of 5-20:1 into a kneading machine in sequence and uniformly mixing; keeping the kneading temperature to be between 80 and 200 DEG C and the kneading time to be between 1 and 18 hours; and taking the kneaded material out and guiding into a forming machine for forming to obtain a cold ramming paste product of a specified size, wherein the aggregates are one or a mixture of more of the normal calcined anthracite, electrically calcined anthracite, high-carbon graphite, metallurgical coke and petroleum coke; the carbon content of each aggregate is not less than 95 percent; and the adhesive is one or a mixture of more of phenolic resin, furfural resin, epoxy resin, furan resin, asphalt, coal tar and anthracene oil.

The invention discloses a combined fixture for cast crossbeams, which comprises a fixed seat, a rotary plate, two end hole drill plates, at least two inclined hole drill plates and a plurality of clamping parts; the fixed seat is provided with a mounting surface connected with a drilling machine workbench and a fixing surface perpendicular to the mounting surface; the rotary plate is rotatably mounted on the fixing surface through a connecting shaft; the end hole drill plates are fixed on both sides of the rotary plate, and the surfaces of the end hole drill plates are provides with die holes corresponding to both sides of a cast crossbeam to be drilled; the inclined hole drill plates are mounted on the surface of the rotary plate, and each inclined hole drill plate is provided with drill plate holes corresponding to the positions and sizes of inclined holes; and the clamping parts are detachably mounted on the rotary plate, and are used for mounting the cast crossbeam on the rotary plate. The invention is integrated with multiple processes for machining, positioning is uniform, the number of processes is reduced, the carrying cost is reduced, and the efficiency is increased.

The invention provides a method for preparing a TiB2 cathode coating for aluminium electrolysis. The method comprises the following steps: grinding such materials as TiB2, a carbon-based material, an additive and the like, then mixing the ground materials proportionally and further mixing the ground materials uniformly in mixing and kneading equipment to obtain a solid powder mixture; adding a diluent into an adhesive, continuously stirring the two materials until the two materials are fully mixed uniformly; and pouring the uniformly mixed mixture of the diluent and the adhesive into the mixing and kneading equipment, nixing the mixed mixture of the diluent and the adhesive with the solid powder mixture and stirring the materials until the materials are mixed uniformly, thus obtaining the TiB2 composite required for aluminium electrolysis. The method has the following beneficial effects: after the product produced by the method is used in an aluminium electrolytic cell, the service life of the aluminium electrolytic cell is greatly prolonged and simultaneously the current efficiency of an aluminium electrolysis process is greatly improved, thus lowering the production cost of aluminium per ton; and the method has the advantages of short process flow, low production treatment cost and low environmental pollution.

The invention provides long-acting anti-rust equipment for hot-rolled magnetic yoke steel. The long-acting anti-rust equipment of the hot-rolled magnetic yoke steel comprises first pinch rollers, up-down rough brushing rollers, second pinch rollers, up-down fine brushing rollers, third pinch rollers, antirust agent nozzles and purging nozzles according to the moving direction of the hot-rolled magnetic yoke steel; and in addition, an anti-rust agent liquid storage tank is further arranged and is connected with the anti-rust agent nozzles. The invention further provides an anti-rust method using the equipment. The rust-proof equipment and the rust-proof method are used, so that the hot-rolled magnetic yoke steel is not rusted for 72 hours under the conditions of the temperature of 49 DEG Cand the relative humidity of 98%, and the anti-rust effect is good. The long-acting anti-rust equipment and method effectively solve the problem that hot-rolled chromium-molybdenum low alloy steel iseasy to rust, and therefore, the long-acting anti-rust equipment and method belong to the environment-friendly production process of steel and iron, and have good social benefit and environmental benefit.

The invention provides a chlorine containing high-concentration NOX waste gas treatment method. Chlorine containing high-concentration NOX tail gas, after undergoing bag-type dust removal, is sequentially processed by virtue of a packing absorbing tower and a plate absorbing tower under an ultraviolet light catalysis condition as well as a normal absorbing tower. The packing absorbing tower and the plate absorbing tower adopt wet dechlorination and denitration under the ultraviolet light catalysis condition, and the normal absorbing tower is a protection tower. In treated waste gas, the content of NOX is lower than 240mg/m<3> and the content of Cl2 is lower than 65mg/m<3>, up to national emission demand. The method has the advantages that by adopting ultraviolet catalytic oxidation wet dechlorination and denitration, by catalyzing an oxidation-reduction reaction between chlorine and NO in the waste gas, and by implementing an oxidizing process simultaneously in a gas phase and a liquid phase, the shortcoming of an existing wet method which is not high in denitration efficiency is overcome; a solution is purified after absorption liquid is electrolyzed, and the NOX is finally recovered in the form of nitrate, so that a degree of resource utilization is improved; and the absorption liquid in the system is recycled, so that secondary pollution is prevented.

The invention provides a processing system of strong brine from reverse osmosis of coking. The processing system comprises a water inlet tank, which is connected to a filler tank, a large aerobic tank, a small aerobic tank, a biological sedimentation basin, and a water outlet tank in sequence through pipelines. The large aerobic tank is connected to a nitration sedimentation basin through pipelines, and the nitration sedimentation basin is connected to the filler tank. A sludge reflux pump is arranged at the bottom of the nitration sedimentation basin and is used for enabling sludge to get in the large aerobic tank. The small aerobic tank is connected to a carbon source dissolving tank through pipelines, and the carbon source dissolving tank pumps dissolved carbon sources into the small aerobic tank through a metering pump. According to the processing system, one-time investment is low; operation is simple, and the production and processing cost is relatively low. Environment-friendly green environment-protecting processing technology of iron and steel waste water is provided. Based on the quality and quantity of strong brine from reverse osmosis of coking, the economical and efficient processing system for discharging strong brine, up to the standard, from reverse osmosis is developed.

The invention provides a refining method of epoxy resin, and belongs to the field of chemical refining. In the staged refining process, the content of water in a system is reduced by pumping negative pressure to a certain vacuum degree and removing water and an organic solvent in the system, so that the reaction is promoted to proceed towards a crude epoxy resin dehydrochlorination ring-closure reaction, the content of hydrolyzable chlorine in the crude epoxy resin is remarkably reduced, by using a phase transfer catalyst and controlling the vacuum degree and temperature of each refining stage, the utilization rate of sodium hydroxide participating in ring-closure reaction is increased, and the use amount of sodium hydroxide is reduced, so that excessive condensation side reaction is avoided, the generation of aged resin is reduced, the content of organic matters in the generated high-salinity wastewater is reduced, and the production treatment cost and raw material consumption are reduced; and the TOC value in the generated high-salinity wastewater is as low as 3434ppm, the aged resin accounts for 0.8% o of the total amount of the resin, and the content of hydrolyzable chlorine in the epoxy resin product is as low as 142 ppm.

The present invention provides alloy plating solution and corresponding treating process for forming coating with high corrosion resistance, high hardness, high wear resistance and high erosion resistance. The present invention is used in hydraulic part production, and has the outstanding features of high plating speed, low material consumption, low power consumption and no pollution. The alloy plating solution is compounded through dissolving nickel sulfate, amino acetic acid, sodium hypophosphorite, graphite fluoride, boric acid, sodium saccharin, lead ion, ammonia water and sodium hydroxide in the weight ratio of 3 to 2.5 to 0.35 to 0.6 to 3 to 0.3 to 0.003 to 0.35 to 0.15 in pure water of 90 weight portions. During plating, the alloy plating solution is heated to 50-80 deg.c, and the plating time is determined based on thickness to be plated.

The invention discloses a beneficiation combined method and a system for comprehensively recovered associated iron phosphate minerals. The method comprises the steps of internally crushing the iron phosphate minerals through a crusher; sequentially carrying out 0.35mm to 0.45mm particle-size coarse crushing, 0.1mm to 0.15mm intermediate crushing, and 0.05mm to 0.09mm fine crushing; screening the fine-crushed powder ore, and obtaining undersize dried powdered ore and plus sieve powdered ore; placing the undersize dried powdered ore into a screening machine with a 0.4T to 1.2T high-intensity magnetic field, screening to obtain magnetic iron ore particles and powder, carrying out magnetic separation to screening a first dried iron ore concentrate, a first dried middling ore, and a first driedtailing, and returning the plus sieve powered ore back to the fine crushing step. The powered ore is dry-screened through sequentially carrying out the technological processes such as coarse crushing, intermediate crushing, fine crushing, screening, and dry screening on raw ore, so that the grinding particle size fineness is improved, the aim of more crushing and less grinding is achieved, the energy consumption and other raw material consumption during the mineral processing process are greatly reduced, the beneficiation cost is reduced, and the economic benefit is improved.

The invention relates to a method for extracting sodium tungstate from a tungsten-containing waste material. The method comprises the following steps: (1) preparing a tungsten-containing waste material; (2) adding sodium carbonate, sodium hydroxide and sulfate into the blocky tungsten-containing waste material, mixing, and then adding a solvent, so that a wet material is prepared; (3) making the wet material into a hollow brick, and naturally drying; (4) roasting the naturally dried hollow brick, and then cooling to room temperature; and (5) crushing into a blocky brick, adding a solvent tiilthe liquid-solid ratio reaches (0.3-1):1, grinding, then adding a solvent till the liquid-solid ratio reaches (1-6):1, leaching for 5-30 minutes at the temperature of 50-120 DEG C, and carrying out filter pressing, so that a sodium tungstate solution and cobalt slag are obtained. The method provided by the invention has the advantages that sodium tungstate can be extracted from the tungsten-containing waste material with relatively high extraction efficiency, the production technical process is simplified, land occupied by equipment is reduced, and the industrial utilization value of the tungsten-containing waste material is comprehensively improved.

The invention provides forced circulation pump set equipment for a water treatment system. The equipment comprises a pump set installation frame, a circulation pump, a water outlet pipe, a gas-liquid mixing device and a wind collecting device; and the circulation pump comprises an electromotor, a rotor component, a water outlet section and a suction section which cooperate in sequence from the top to the bottom. According to the equipment provided by the invention, the wind collecting device is arranged under the electromotor of the circulation pump, the electromotor of the circulation pump is provided with a fan for dissipating heat, when the circulation pump runs, the wind collecting device collects wind energy generated by the fan of the electromotor and sends the wind energy into the gas-liquid mixing device, the wind energy and a medium in the water outlet pipe are subjected to gas-liquid mixing circulation, the collected wind energy contains a large amount of oxygen, the oxygen can be oxidized with the medium, so that the equipment saves energy and reduces costs without the need of additionally adding oxygen production or wind production equipment; and the collected wind energy has air pressure and can generate jet action to drive the medium in the water outlet pipe to flow, so that the medium in the circulation pump and the water outlet pipe has siphon flow, acting of the electromotor on the circulation pump is reduced, energy consumption is reduced, and the production treatment costs of the medium are reduced.

The invention provides a treatment method and a treatment system for improving the biodegradability of surface finishing liquid wastewater. According to the present invention, surface finishing liquid wastewater flows into a coarse sand filter to remove suspended matters and impurity particles from the wastewater, the surface finishing liquid wastewater outflowing from the coarse sand filter enters a contact reaction tower provided with an air source ozone generator from the bottom portion of the contact reaction tower, a cordierite honeycomb ceramic-supported ferromanganese catalyst filler is placed in the contact reaction tower, the ozone generated from the air source ozone generator enters the contact reaction tower from the bottom portion of the contact reaction tower, and the wastewater, the ozone and the catalyst are co-subjected to a water vapor heterogeneous catalytic reaction in the contact reaction tower so as to improve the biodegradability of surface finishing liquid wastewater, ie., the BOD/COD value in the surface finishing liquid wastewater can be increased. With the technical scheme of the present invention, the environmental pollution can be reduced, and the increasingly stringent environmental protection laws and regulations can be met.