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1554results about How to "Enable recycling" patented technology

Method for rapidly reducing copper slags to produce iron-copper alloys in kiln in reducing atmosphere

A method for rapidly reducing copper slags to produce iron-copper alloys in a kiln in a reducing atmosphere is characterized by including the steps: proportionally mixing the copper slags, reducing agents and additives, crushing or levigating the mixture to 200 meshes to obtain 20%-40% of residues on sieve; doping agglomerants and water occupying 5-20% of all materials on a dry mass basis, uniformly mixing, producing the uniformly mixed mixture to pellets with the diameters ranging from 15mm to 30mm and small cylindrical briquettes with all the heights ranging from 15mm to 30mm by a pellet press or a briquetting machine, and drying the pellets or small cylindrical briquettes; flatly laying the dried pellets or small cylindrical briquettes at the bottom of the kiln, wherein the material layer thickness ranges from 20mm to 45mm, the material layer reducing temperature ranges from 1250 DEG C to 1450 DEG C, and the reducing time is 10-40min; and subjecting the reduced pellets or the briquettes to cooling, crushing, wet grinding and wet separation so that iron-copper alloy powder with the iron recovery rate of 85%-99% is obtained. According to the method, iron in a great quantity of silicate iron in the copper slags, which cannot be separated out by the traditional technology, is extracted and turns into the iron-copper alloy micro powder with high added value so that iron and copper in the copper slags are extracted and used simultaneously, and physical and chemical heat energy in strong reducing waste gas can be completely recovered during rapid depth reduction.
Owner:TONGLING NON FERROUS METAL GROUP CORP +1

Recovery method of positive active material in lithium ion battery waste material

The invention provides a recovery method of a positive active material in a lithium ion battery waste material. The method includes the following steps: S1, heat treatment of the waste material is performed at 350-500DEG C in inert gas or reducing gas atmosphere; S2, powder product obtained in the step S1 is sintered at 600-800DEG C in the inert gas or reducing gas atmosphere; and the positive active material is obtained by recovery; the positive active material is one or multiple substance selected from lithium phosphate, lithium silicate or a vanadium material of lithium. The positive active material obtained by recovery is high in charge and discharge capacity, and high in charge and discharge efficiency, the obtained positive active material is even in particle size distribution, and complete in crystal structure, the technical process of the recovery method is simple, the requirement on equipment is low, the process is easy to control, at the same time, the recovery process may not cause a negative impact on the active material, physical and chemical properties and electrochemical activity of the active material may not be affected, the recovery and reuse of the positive active material raw material can be realized, the cost can be saved, and the recovery method has environmental-friendly benefits.
Owner:BYD CO LTD

Method and device for treating a great variety of waste emulsion of high concentration using hyperfiltration membrane method

The invention discloses a method for treating the waste emulsion with high concentration and a plurality of varieties by an ultrafiltration membrane method and a device thereof, which belongs to the technical field of waste water and waste liquid treatment. The main technique of the invention is 'dissolved air flotation-ultrafiltration membrane-electrolysis floatation', which can effectively reduce the dosage of medicament and improve emulsion breaking effect by adopting an efficient dissolved air flotation system, moreover, the water for dissolved air flotation, which is taken from a subsequent intermediate water tank, can flexibly adjust and dilute the concentration of the waste water, thus improving the running stability and the shock resistant loading capability of the system. An ultrafiltration membrane with large flux, high separative efficiency and long service life is adopted in an ultrafiltration system to realize oil-water separation and to concentrate the emulsion for a plurality of times and then floating oil is recovered, the waste water generated in ultrafiltration washing is treated again after reflow, thus reducing waste liquid discharging. Electrolysis floatation can remove residual emulsified oil and dissolved oil in the waste water, thus further lowering the COD value of yielding water. When the quality of raw water is changed, an activated carbon adsorption unit can guarantee the quality of the yielding water to be standard. The method and the device of the invention can process waste emulsion with high concentration and a plurality of varieties and have simple and reasonable technique, good quality of yielding water, compact layout of the device, thus facilitating automatic control and realizing recovery of emulsion and recycle economy as well as changing waste to be profitable simultaneously.
Owner:GO HIGHER ENVIRONMENT GRP CO LTD

Ionic liquid precursors and their supported mesoporous materials, synthesis and applications

The invention relates to an ionic liquid precursor and a mesoporous material for supporting the ionic liquid precursor, synthesis and application. A preparation method comprises the following steps of: 1) synthesizing the ionic liquid precursor; 2) synthesizing the mesoporous material for supporting the ionic liquid precursor; and 3) acidizing or alkalifying the synthesized mesoporous material for supporting the ionic liquid precursor according to the requirements so as to obtain a target product. The loading capacity of the mesoporous material for supporting the ionic liquid precursor is relatively adjusted, and a mesoporous material for supporting functionalized ionic liquid can be obtained by further acidizing or alkalifying the material according to the requirements. The amount, strength of acid and alkali, properties, variety and the like of ionic liquid supported on the material are adjustable, so that the material can meet the demand of application such as various acid and alkaline catalytic reactions, chemical adsorption and separation and the like. By the material, the using amount of the ionic liquid is greatly reduced, the better catalytic effect is achieved when the material is applied to aldol condensation reactions, and the recycling of a catalyst can be realized. The kind of material is expected to be used for catalyzing more chemical reactions, and may be applied in the fields of adsorption, separation, ionic conductance and the like.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Efficient crushing device for construction waste

The invention discloses a high-efficiency crushing device for construction waste, which comprises a crushing box, a feeding pipe is arranged on the top of the crushing box, a water collecting tray is arranged on the inner wall of the crushing box, and several nozzles are uniformly arranged on the surface of the water collecting tray, and the crushing box There is a water tank on the outer wall on the left side, and a catheter is connected between the water tank and the water collection tray, and a water pump is installed on the catheter; the left and right inner walls of the crushing box are symmetrically equipped with limiting extrusion plates, and the sliding device inside the sleeve There is a sliding shaft, a damping spring is arranged in the sleeve, and the crushing pressure head is in contact with the sawtooth; a control box is provided on the outer wall on the right side of the crushing box, and the control box is electrically connected with the electromagnet plate; The crushing efficiency is high and the crushing effect is sufficient; the buffer plate buffers and absorbs the garbage entering the crushing box, reduces the impact on the crushing roller, improves the stability of the device, reduces mechanical loss and failure rate, and avoids construction The concentrated falling of garbage leads to uneven crushing.
Owner:李明超

Coal mine two-end gas plug and middle water seal layer penetrating drill hole sealing device and method

A coal mine two-end gas plug and middle water seal layer penetrating drill hole sealing device comprises a gas extraction pipe, a gas injection pipe and a water injection pipe which are arranged in parallel.A first limiting block, a first expansion gas bag, a second limiting block, a third limiting block, a second expansion gas bag and a fourth limiting block are sequentially arranged on the gas extraction pipe from inside to outside, an inner end opening of the gas injection pipe is communicated with the interior of the first expansion gas bag, a gas injection hole communicated with the interior of the second expansion gas bag is formed in the gas injection pipe, and an inner end opening of the water injection pipe is located between the second limiting block and the third limiting block.The invention further discloses a hole sealing method.Cheap water and air are adopted as hole sealing materials in the device and the method and can be supplemented through an underground air compression system and a water supply system as needed to ensure good hole sealing quality, the whole device can be recycled and reused after the extraction work is finished, pollution to a coal body, underground water and underground air can be avoided, the safety level of a mine is improved, and popularization of the novel coal mine gas treatment technology can be easily promoted.
Owner:关红星

Method for recycling high-iron red mud as steelmaking slag former/dephosphorizing agent

The invention discloses a method for recycling high-iron red mud as a steelmaking slag former / dephosphorizing agent. The red mud is solid waste generated when alumina is produced by adopting a Bayer process, and the existing treatment method of the solid waste is to be stored in a yard. The method comprises the following step: mixing the air-dried and levigated mud red with lime at the mass ratio of 1:(0.6-0.8), as a slag former / dephosphorizing agent during a steelmaking process. The invention provides a conception of recycling the iron element in waste red mud in an aluminum plant and removing elements of Si, P and the like in molten iron, desiliconization and dephosphorization can be carried out by fully utilizing the high oxidization and high alkalinity of the high-iron red mud, and the iron element in the red mud can be recycled. Silicon element in the iron can be removed to be below 0.1% and the phosphorous removal rate can achieve more than 76% under the condition of no oxygen blowing, the majority of Fe element in the high-iron red mud enters a molten iron melting pool, so that the recycling of red mud can be realized, the production cost can be lowered, and further multiple purposes of changing wastes into valuables, protecting the environment and the like can be achieved.
Owner:UNIV OF SCI & TECH BEIJING

Method for manufacturing glass ceramic by titanium-containing melting blast furnace slag

InactiveCN102603191AEnable recyclingReduce energy consumption in production processSlagHeat treated
The invention discloses a method for manufacturing glass ceramic by titanium-containing melting blast furnace slag. The method comprises the following steps of: directly feeding titanium-containing high-temperature melting blast furnace slag flowed out of a blast furnace into a metal mixer, mixing the slag with other auxiliary raw materials and a fluxing agent, feeding high-temperature initial-refining solution into a glass melting furnace and also adding a clarifying agent and a coloring agent, refining in the glass melting furnace to form the smelted glass with uniform elements, uniform temperature and good flowability, feeding the smelted glass into a calendar to form red and hot glass blanks by pressing, and feeding the pressed glass blanks into a crystallization annealing kiln to carry out thermal treatment to manufacture the glass ceramic which takes diopside as a main crystalline phase. Compared with the prior art, the method for manufacturing the glass ceramic by the titanium-containing melting blast furnace slag has the advantages that the blast furnace slag with high titanium content is taken as the raw material for preparing the glass ceramic, thus the effectively utilization rate of the blast furnace slag with the high titanium content is improved, the discharge of the blast furnace slag with the high titanium content is further reduced, and the recovery of an industrial solid waste resource is also realized when the environment is improved.
Owner:达州市海蓝冶金设备制造有限公司

Coking wastewater treatment device and coking wastewater posttreatment method

The invention relates to a coking wastewater treatment device which comprises a flocculation reaction tank, wherein the flocculation reaction tank is connected with a flocculation settling pond, the flocculation settling tank is connected with a sand filter, and the sand filter is connected with an active carbon filter. A coking wastewater posttreatment method comprises the steps of: adding an efficient composite flocculating agent, a polymer coagulant aid and a mineral powder absorbing agent into the coking wastewater subjected to common treatment; regulating the pH value to be 8-9 with alkali, wherein the flocculation reaction settling time is 1-2.5h; and then carrying out sand leaching and active carbon filtration, wherein the effluent quality fully reaches the standard for emission or recycling. The COD (Chemical Oxygen Demand), the total phenol, the ammonia nitrogen, SS (Suspended Substances) and the chromaticity in the coking wastewater subjected to the treatment with the method are respectively reduced by above 80 percent, 90 percent, 60 percent, 90 percent and 95 percent; and by treating the coking wastewater according to the invention, the purposes of good effect, simple operation and convenience in management are achieved.
Owner:SHANGHAI WEILAI ENTERPRISE

Integrated monitoring device of oriented stress distribution and deformation of single-hole coal-rock masses and monitoring method

The invention discloses an integrated monitoring device of oriented stress distribution and deformation of single-hole coal-rock masses and a monitoring method. The integrated monitoring device consists of multiple capsule pressure sensors, a three-way magnetic valve, a connection pipe, a multi-channel displacement monitor, a multi-channel pressure monitor, a steel filament rope and an installation guide rail. According to the invention, the capsule pressure sensors are arranged in drilling holes; through liquid injection devices, the hydraulic pressure of each capsule pressure sensor is allowed to reach a preset value; the capsule pressure sensors are well coupled to the coal-rock masses; deformation monitoring points are attached to the housings of the capsule pressure sensors so that reliable fixation of the deformation monitoring points is achieved; consistency of the stress monitoring and deformation monitoring of the coal-rock masses is ensured; and after the monitoring is finished, all electromagnetic control valves are opened, liquid in the capsules flows back, and the installation guide rail is moved out from detection holes, so recycling is finished. Thus, problems of poor applicability to mining induced stress and deformation of the coal-rock masses, poor consistency, high monitoring cost and unrecyclable devices in the current drilling hole stress monitoring devices are overcome.
Owner:SHANDONG UNIV OF SCI & TECH

Device and method for recovering acid from waste liquid containing low-concentration acid and high-concentration metal ions through hydrogen-ion selective electrodialysis

The invention provides a device for recovering acid from a waste liquid containing low-concentration acid and high-concentration metal ions through hydrogen-ion selective electrodialysis. The waste liquid containing low-concentration acid and high-concentration metal ions is separated through the hydrogen ion selective electrodialysis device, selective separation of hydrogen ions and the metal ions is realized, recycling of the low-concentration acid in the waste liquid can be realized, and meanwhile, the metal ions in the waste liquid can be directly recycled, or pure metal can be obtained through electrodeposition. The method is simple to operate, and is economical and environmentally friendly, and the low-concentration acid and the high-concentration metal ions in the waste liquid can be recycled and reused, so that the device has good application values, the problem that acid and metal ions cannot be separated from the waste liquid containing low-concentration acid and high-concentration metal ions at present is solved, the problem of deep separation of the low-concentration acid in a diffusion dialysis leachate is also solved, and thus the problem of hydrogen evolution existedwhen the metal ions in the diffusion dialysis leachate are treated by the electrodeposition method is also solved.
Owner:UNIV OF SCI & TECH OF CHINA
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