13results about How to "Improve reduction efficiency" patented technology

The application discloses a data reduction method and device applied to a general-purpose graphic processor, which can be applied to the technical field of information processing. The data reduction method applied to the general-purpose graphic processor comprises the following steps: grouping elements in received first vector data to generate multiple groups of second vector data; wherein each group of second vector data contains the same number of elements; reducing elements with the same position in the multiple groups of second vector data to generate a first reduction result; reducing the first reduction result to generate a second reduction result, and storing the second reduction result to a scalar memory. The data reduction method applied to the general-purpose graphic processor can greatly improve the reduction efficiency of vector data of the general-purpose graphic processor.

This invention proposes a plasma-heated direct reduction vertical shaft furnace and a method for reduction ironmaking. The vertical shaft furnace has a furnace body and a hopper. The furnace body includes an independent cylinder and a furnace cooling section. The independent cylinder is connected to the hopper, and hollow graphite electrodes are installed on the independent cylinder. The hollow graphite electrodes are connected to a reducing gas source device to ionize a first portion of the reducing gas supplied by the reducing gas source device and generate high-temperature ionized gas. The furnace cooling section is located below the independent cylinder and is connected to the reducing gas source device. A second portion of the reducing gas supplied by the reducing gas source device enters the furnace cooling section and is preheated by the high-temperature reduced iron therein. The preheated second portion of the reducing gas enters the independent cylinder and, together with the high-temperature ionized gas, reduces the green pellets that have entered the independent cylinder. This invention avoids the safety hazards associated with heating outside the vertical shaft furnace and the transportation of high-temperature reducing gas.

This invention discloses a direct ironmaking method and system using an electromagnetically heated rotary kiln in a plasma-cracking water hydrogen production environment, belonging to the field of metallurgical reduction technology. The method includes: feeding the raw materials to be reduced and a high-temperature reducing agent into an electromagnetically heated rotary kiln; purging the raw materials with high-temperature reducing gas while the rotary kiln rotates, resulting in two raw materials; subjecting the two raw materials to reduction treatments through high-temperature reducing gas purging and rotary kiln rotation; removing dust, evaporating and cooling the reduction products, and grinding them to obtain tail gas carrying ultrafine carbon powder, water vapor, reduced iron, and semi-coke; feeding the tail gas and water vapor into a plasma-cracking water hydrogen production reforming unit to obtain high-temperature hydrogen-rich syngas; cooling the high-temperature hydrogen-rich syngas and feeding it into a gas holder, then circulating it through a heating and pressurization process back into the electromagnetically heated rotary kiln. This invention solves the problems of low reduction efficiency and insufficient contact area in traditional ironmaking processes, achieving efficient recycling of reducing gas resources.

The present application belongs to the technical field of metallurgy and mineral processing suspension fluidization roasting, and particularly relates to a system and process for producing nickel by coal-based roasting reduction electric furnace smelting of laterite nickel ore. The system comprises a feeding drying unit, a preheating drying and crushing unit, a heat supply heating unit, a coal-based pre-reduction unit, an electric furnace smelting waste heat recovery unit, a dust removal, powder conveying and desulfurization unit, and the laterite nickel ore is processed by the "dry powder crushing, coal suspension roasting, coal-based pre-reduction, and ore-smelting electric furnace" technology. The present application has strong adaptability to raw materials, can produce high-value products from cheap resources, and adopts multiple energy-saving technologies in the new process to greatly reduce energy consumption and realize efficient use of energy. The present application makes up for the limitations and deficiencies of the traditional RKEF process, can reduce process energy consumption, improve resource recovery rate, provides a new innovative breakthrough direction for efficient utilization of laterite nickel ore resources for smelting nickel-iron alloy, and can greatly improve the economic value of the development and utilization of such resources.

The present application relates to the technical field of metal magnesium production, and particularly relates to a metal magnesium vertical reduction furnace loading structure and method, wherein the loading structure comprises a spherical charger, the spherical charger is provided with a magnesium vapor overflow hole, the spherical charger is filled with pellet material, a plurality of spherical chargers are connected by steel ropes one by one, and the plurality of spherical chargers are arranged in a reduction tank during processing of the reduction furnace. The spherical charger is filled with pellet material, and the spherical charger is arranged in the reduction tank, so that the problem of difficulty in magnesium vapor overflow, low reduction efficiency and slag sticking caused by falling and crushing of the pellet material when the pellet material is directly poured into the reduction tank is solved.

The invention discloses a hydrogen and CO2 coupled blast furnace ironmaking method, and belongs to the technical field of ferrous metallurgy equipment and processes. The method comprises the following steps: carrying out component separation treatment on the blast furnace top gas, and respectively capturing CO2 gas and unreacted CO gas in the blast furnace top gas; a reverse water-gas shift reactor is arranged outside the blast furnace, and captured CO2 and external hydrogen are converted into CO-rich reducing gas; and mixing and tempering the generated CO-rich reducing gas and the separated CO gas, and cooperatively spraying into the blast furnace from a tuyere and / or a furnace body part of the blast furnace to participate in iron ore reduction reaction. According to the invention, the hydrogen-carbon conversion process with strong heat absorption is independently carried out outside the furnace, so that the combustion loss of coke is obviously inhibited from dynamic and chemical equilibrium, and double closed-loop circulation of carbon in the smelting system is realized. A multi-dimensional space differential injection mechanism is constructed, the comprehensive utilization rate of hydrogen is remarkably increased, and meanwhile the fuel ratio and the carbon dioxide emission of the blast furnace are reduced.

The invention belongs to the technical field of metallurgy, and particularly relates to a device and method for treating sefstromite, the device for treating the sefstromite comprises a rotary kiln, a feeding system, a ball mill and a magnetic separator, the rotary kiln comprises a barrel, a feeding pipe, a discharging pipe and a driving device, a heat insulation layer is arranged outside the barrel, at least one heating module is arranged outside the heat insulation layer, and the heating module is connected with the driving device. The heating module comprises an electromagnetic coil and an electromagnetic frequency conversion control cabinet, and the electromagnetic coil surrounds and wraps the heat insulation layer; the feeding system is connected with a feeding pipe of the rotary kiln and comprises a coal feeding system and a sefstromite feeding system; a discharging pipe of the rotary kiln is sequentially connected with the ball mill and the magnetic separator. The rotary kiln of the device adopts electromagnetic induction heating, the situation that a large amount of flue gas generated by combustion takes away mineral powder is avoided, the temperature in the rotary kiln is uniform and easy to control, and coal is adopted as a reducing agent, so that feeding of the mineral powder into the kiln is achieved, the reduction efficiency is higher, separation of iron, vanadium and titanium is better facilitated, and efficient recovery of vanadium and titanium is facilitated.

This utility model discloses a sludge reduction device based on porous packing, belonging to the field of sludge reduction technology. It includes an inlet pipe, a reduction mechanism fixedly connected to its outer surface, a filter assembly movably connected to the inner cavity of the inlet pipe, and an outlet pipe fixedly connected inside the reduction mechanism. A valve is installed on the outer surface of the outlet pipe. Through two aerators and a stirring assembly, air can be supplied to the reaction tank to form a stable aerobic environment, providing sufficient oxygen for the aerobic metabolism of microorganisms and accelerating the decomposition of organic matter in the sludge. Simultaneously, the water flow disturbance generated by aeration and the stirring action of the stirring assembly promote full contact between the wastewater and the biofilm on the porous packing, significantly improving mass transfer efficiency. In this environment, microorganisms can more fully utilize the organic matter in the wastewater, accelerating their own metabolism and sludge decomposition, thus improving sludge reduction efficiency, effectively reducing subsequent sludge treatment costs and environmental pressure, and enhancing the practicality of the device.

The invention discloses a composite adhesive for sintered return mine cold-bonded pellets and application of the composite adhesive. The composite adhesive is prepared from liquid sodium silicate, pre-gelatinized cassava starch and defective glass fibers which are sintered, returned and ground on the basis of the total mass of a ball pressing mixture, the application method comprises the following steps: grading and blending sintered return mine according to the grading index, shearing and grinding the sintered return mine and defective glass fiber in a cylindrical rotary drum by utilizing the characteristics of high hardness and sharp edge of the sintered return mine, then mixing the rest of adhesive and water to prepare a ball pressing mixture, and drying and solidifying for 4 hours by utilizing sintering / ring cooling flue gas after performing compression molding by using a pair of rollers at 30MPa. Through the synergistic effect of sodium silicate, cassava starch and glass fiber, the green pellet drop strength is larger than or equal to 5 times / P, the dry pellet compressive strength is larger than or equal to 2200 N / P, and the alkali metal content is smaller than 0.4%; meanwhile, resource utilization of sintering return mine, defective glass fiber and industrial waste gas is achieved, the method is compatible with existing steel equipment, the cost is controllable, the method is suitable for large-scale industrial production, and green and low-carbon transformation of the steel industry is promoted.

A fluidized coal-based pre-reduction subsystem and a method for preparing molten iron from laterite nickel ore are disclosed, belonging to the field of laterite nickel ore reduction roasting technology. The system includes a preheating oxidation system, a fluidized coal-based pre-reduction system, a high-temperature molten iron subsystem, and a hot air circulation system; wherein the preheating oxidation system, the fluidized coal-based pre-reduction system, and the high-temperature molten iron subsystem are connected sequentially, and the hot air circulation system connects all systems into a closed loop. The method for preparing nickel-containing molten iron using the above system includes the following steps: 1. Feeding and preheating oxidation operation; 2. Fluidized coal-based pre-reduction operation; 3. High-temperature molten iron subsystem operation. The method for preparing nickel-containing molten iron using the fluidized coal-based pre-reduction-molten iron subsystem has advantages such as no need for coke, low reducing agent consumption, large processing capacity, low power consumption, environmental friendliness, compact process, and high degree of automation.

This invention provides a method for preparing a silver chloride / silver-copper-iron-titanium oxide composite material, comprising the following steps: Step S1, citric acid is dissolved in an ethanol solution to obtain a mixture A; Step S2, tetrabutyl titanate solution is added dropwise to mixture A to obtain a mixture B; Step S3, copper nitrate and ferric nitrate are added to deionized water to obtain a mixture C; Step S4, mixture B is added dropwise to mixture C, and the pH is adjusted to obtain a mixture D; Step S5, mixture D undergoes a solvothermal reaction to obtain a precipitate; Step S6, the precipitate is washed, centrifuged, dried, and ground to obtain a copper-iron-titanium oxide material; Step S7, silver nitrate and the copper-iron-titanium oxide material are weighed and added to a quartz reaction tube, deionized water is added, and photodeposition is performed using a mercury lamp to obtain a mixed solution; Step S8, sodium chloride solution is added dropwise to the mixed solution to obtain a mixture; Step S9, the mixture is centrifuged, washed, dried, and ground to obtain a silver chloride-copper-iron-titanium oxide composite material.

This invention discloses a high-temperature ironmaking system and method for pulverized coal gasification and synergistic melting reduction. The system comprises a pulverized coal gasification-iron oxide preheating section, a pulverized coal gasification-iron oxide reduction section, a high-temperature ironmaking melting section, and a slag-iron separation section, connected from top to bottom. The pulverized coal gasification-iron oxide preheating section is equipped with a common pulverized coal gasification burner and an iron oxide powder nozzle, as well as multiple dispersed pulverized coal gasification burners and iron oxide powder nozzles. The high-temperature ironmaking melting section is connected to the pulverized coal gasification-iron oxide reduction section via a conical inlet. In this invention, pulverized coal undergoes combustion and gasification reactions in the pulverized coal gasification-iron oxide preheating section, releasing a large amount of heat. In the pulverized coal gasification-iron oxide reduction section, the iron oxide powder undergoes a reduction reaction. The separated gas enters a waste heat comprehensive utilization unit for further utilization of waste heat. The tail gas from the ironmaking furnace can be used to heat the steam and oxygen required for the gasification reduction reaction, achieving efficient utilization of pulverized coal.

The invention belongs to the technical field of functional materials, and particularly relates to a phosphoric acid functionalized nickel porphyrin covalent organic framework / carbon nanotube composite material, which comprises: a nickel porphyrin covalent organic framework, which is a polymer formed by connecting a plurality of nickel porphyrin monomers through a covalent organic framework ligand; the carbon nano tube and the nickel porphyrin covalent organic framework form a heterojunction through in-situ growth; and the phosphoric acid functional group is chemically bonded on the covalent organic framework ligand of the nickel porphyrin covalent organic framework in the form of an alpha-phosphoramidate bond. The composite material provided by the invention integrates the photocatalytic reduction of nickel porphyrin, the photothermal conversion of carbon nanotubes and the selective adsorption function of phosphate groups on uranium, and the three components cooperate to form a virtuous cycle of rapid mass transfer, efficient capture, in-situ reduction and active site regeneration, so that the efficiency and rate of extracting uranium from seawater are greatly improved.