58results about How to "Achieve efficient recycling" patented technology

The invention belongs to the technical field of ore dressing and in particular relates to a sorting technology for iron core containing copper, cobalt and magnetite. An ore grinding-grading-magnetic separation magnetite dressing technology is adopted for sorting magnetite, and a copper-cobalt bulk flotation and separation technology is adopted for sorting copper and cobalt. The sorting technology for the iron core containing copper, cobalt and magnetite has the advantages that three valuable minerals are respectively separated out by firstly adopting magnetic separation to obtain qualified iron ore concentrate and then adopting flotation for successively sorting qualified copper concentrate and cobalt concentrate, treatment ore quantity of the next sorting system is gradually reduced, energy consumption is effectively reduced, and production cost is reduced; meanwhile, three concentrates respectively reach an industrial utilization level, effective and comprehensive recycling of three elements is realized, and the economic benefit is increased.

Disclosed is a method for extracting and recycling scandium and titanium from an acid leaching solution containing scandium and titanium. When the acid solution containing both scandium and titanium is processed, scandium is preferentially extracted by making full use of the features that the concentration of the acid leaching solution is relatively high, and the high acidity can restrain iron and titanium and improve the selectivity of organic phosphonic acid extracting agents to scandium, a residue rich in scandium is obtained by the use of a NaOH solution through back extraction, titanium is extracted by the use of amine extracting agents which are high in selectivity to titanium after scandium is extracted, titanium is processed by a NH4Cl-H2O2 mixed solution through back extraction, a back extraction solution concentrates and crystallizes, NH4Cl crystals are separated out, and a solution rich in titanium is obtained. By the adoption of the method, effective recycling of scandium and titanium is achieved, the problem that when scandium and titanium are extracted by the use of the organic phosphonic acid extracting agents and the amine extracting agents respectively under the usual conditions, due to the fact that iron, scandium and titanium are not separated thoroughly, the follow-up separation process is tedious is solved, the process is short, the cost is low, comprehensive recovery of low-concentration scandium and titanium in the acid leaching solution and titanium dioxide production waste acid is achieved, and the method has the advantages of being simple in technological process, high in scandium and titanium concentration ratio, thorough in separation and low in production cost, and free of pollution.

The invention provides a method for recycling iron, indium and tine in zinc volatilizing kiln slag. The method comprises the following steps: uniformly mixing zinc volatilizing kiln slag and a reducing agent, subsequently feeding the mixture into a rotary furnace to carry out reduction roasting, and at the same time capturing fume generated in the process; furthermore feeding oxidation gas into the rotary furnace, carrying out magnetic roasting and capturing the fume generated in the process at the same time; carrying out air-cooling on remaining materials inside the rotary furnace, grinding ore, and subsequently carrying out low intensity magnetic separation so as to obtain magnetite concentrate. The effective recycling of iron in the kiln slag is realized through the steps, and tail slag contains copper. The recycling rates of the iron, the indium and the zinc can be respectively 75-85%, 85-93% and 86-95%; through low intensity magnetic separation, the iron grade of the iron concentrate is improved while ensuring the recycling rate of the iron, the effective recycling of an iron resource is achieved, and the iron grade of the iron concentrate is improved to be 70-75% finally; the process is short, the operation is simple and feasible, economic cost is low and metal comprehensive recycling rate is high, a conventional process order of separation-first and smelting-later is broken, and the comprehensive utilization rate of a secondary resource is improved.

The invention relates to a cooking range generating steam by using waste heat. The cooking range a furnace body, a furnace head and a water tank, wherein the furnace body is combined by an inner furnace wall and an outer furnace wall; a hollow region surrounded by the inner furnace wall is a hearth; a plurality of tubular fire bars are uniformly arranged below the hearth at intervals in the furnace body; the furnace head comprises an outer furnace ring, an inner furnace ring and a pot body supporting ring; the lower end of the inner furnace ring is connected to the inner furnace wall; the lower end of the pot body supporting ring is connected to the outer furnace wall; a cavity among the inner wall furnace, the outer wall furnace and the furnace head is a heating cavity; a coil surrounding the hearth is arranged in the heating cavity; a steam pipe communicating with the top of the heating cavity is arranged in the upper part of the water tank; a water outlet pipe communicating with the bottom of the heating cavity is arranged in the lower part of the water tank; a gas outlet pipe is arranged on the top of the water tank; a water inlet is formed between the steam pipe and the water outlet pipe on the water tank; and a float ball water inlet valve is arranged on the water inlet. The cooking range provided by the invention realizes efficient recovery of smoke heat and automatic control of water inflow in a stove using process.

The invention provides a magnetic lanthanum-loaded attapulgite clay dephosphorization adsorbent, which comprises an attapulgite clay carrier, and lanthanum and ferroferric oxide are loaded on the attapulgite clay carrier. The attapulgite clay carrier provided by the invention provides an ideal structure without additional structural modification, and can ensure uniform distribution of lanthanum loaded in surface and internal mesh holes, thereby improving the adsorption capacity of the adsorbent. Meanwhile, the problem that the lanthanum modified adsorption material is easy to block in the modification process is also solved. According to the method disclosed by the invention, magnetic materials are added to the attapulgite clay by a method of adding Fe3O4, and the magnetic materials are easily separated from a water body, so that effective recovery of phosphate and reutilization of the materials are realized. Therefore, the magnetic lanthanum hydroxide modified attapulgite clay adsorbent (La-ATP-coated Fe3O4) provided by the invention can be used for efficiently adsorbing and recycling the phosphorus in the water body.

The invention relates to a multi-purpose refrigeration and heating air conditioner device and double heat recovering device constituted by it, comprising multi-purpose refrigeration and heating air conditioner device. Heat exchanger is connected between the exhaust port of compressor in the multi-purpose refrigeration and heating air conditioner device and the inlet port of multi-way reversing valve in series. The heat exchanger is used with a heat exchanger in the multi-purpose refrigeration and heating air conditioner device to realize double heat recovery and utilization. It is applied in the air conditioner with water heater function and is provided with refrigeration, heating, making hot water and making hot water and high-temperature hot water with refrigeration and heating at the same time so on. It is also provided with new and reliable structure, few modules, low cost and high commercial value so on.

The invention belongs to the technical field of cellulase recycling and discloses lignin magnetic nanoparticles with pH response, a preparation method thereof and application of the lignin magnetic nanoparticles in cellulase recycling. The preparation method includes the steps of (1) subjecting a lignosulfonate and a quaternization reagent to reaction to obtain a lignin derivative with pH response; (2) subjecting the lignin derivative with pH response, a ferric salt and a ferrous salt to chemical co-precipitating reaction in the presence of a precipitating agent to obtain lignin magnetic nanoparticles with pH response. The invention also provides lignin magnetic nanoparticles with pH response prepared via the preparation method, and application of the lignin magnetic nanoparticles with pHresponse in cellulase recycling. The lignin magnetic nanoparticles with pH response are efficient in adsorbing and fixing cellulase and desorbing the cellulase by simple pH adjustment so as to efficiently recycle the cellulase; the recycled cellulase features high recycle rate and high activity and is reusable.

The invention relates to a method for preparing a mercury-containing catalyst by combining microwave with ultrasonic regenerated coal, and belongs to the technical field of recycling of coal preparedwaste mercury catalysts. The method comprises the following steps: uniformly mixing a coal prepared waste mercury catalyst with ammonia water to obtain a mixture A; under ultrasonic conditions, carrying out leaching reaction on the mixture A for 20 to 240 minutes, filtering and drying; carrying out microwave drying on the obtained product under the conditions of 50 to 150 DEG C for 5 to 30 minutes; carrying out microwave heating under the conditions of 150 to 400 DEG C for 5 to 120 minutes to obtain a mercury demercurated waste catalyst and Hg vapor; condensing and recycling the obtained Hg vapor to obtain liquid pure mercury; introducing activated gas and carrying out microwave activation on the obtained mercury demercurated waste catalyst under the conditions of 500 to 800 DEG C for 10 to 100 minutes to obtain activated carbon for a regenerated mercury waste catalyst. The method disclosed by the invention has the advantages of simple overall process flow, low cost of raw materials, capability of achieving the regeneration of the activated carbon and efficient recovery of mercury, economic value and actual production significance.

The invention discloses an intelligent bait casting device capable of identifying fish schools and recycling remnant bait and a using method. The device comprises a material carrying cover, a bait binis arranged at the bottom of the material carrying cover, a water storage tank is arranged below the bait bin, the water storage tank is connected with a water pumping and draining device, a fish finder is arranged at one side of the material carrying cover, and a net door is arranged in the middle of the material carrying cover. An upper inner net is arranged at the top of the material carryingcover, a lower inner net is arranged at the bottom of the material carrying cover, and a plurality of light bait suction pumps and heavy bait suction pumps are arranged in the bait bin. By means of the device, quantitative bait casting can be conducted according to the fish schools, effective recycling of the remnant bait is achieved, the utilization rate of resources is increased, pollution of the bait to water and bottom mud of a culture pond can be reduced, and the culture environment is improved; and secondly, the device is convenient to operate, high in flexibility, wide in feeding area and high in use efficiency, and reference can be provided for mechanical and intelligent application of aquaculture in China.

The invention provides an LNG light dydrocarbon separation coupled geotherm flash evaporation/Karina combined cycle power generation system. The system comprises an LNG light dydrocarbon separation system, a geotherm flash evaporation cycle system, a Karina cycle system and a natural gas direct expansion system. The LNG light dydrocarbon separation system is used for recycling C2+ light dydrocarbon resources. The geotherm flash evaporation cycle system, the Karina cycle system and the natural gas direct expansion system are used for LNG cold energy and medium-low-temperature geothermal energycoupling power generation. While the geotherm flash evaporation/Karina combined cycle power generation efficiency is improved, effective recycling of the C2+ light dydrocarbon resources and efficientcomplementary use of LNG cold energy and geothermal energy are achieved, and the system has the beneficial effects of being reasonable and compact in structure, safe and flexible in control, efficient, high in practicality and low in cost and saving energy.

The invention belongs to the technical field of coal chemical industry, and relates to a gasifying process route for clean and efficient utilization of coal, in particular to an energy-saving water-saving gas/steam cogeneration gasifying process. The gasifying process includes that a carbon-containing powder material reacts with an oxidant in a gasifying furnace, generated high-temperature synthetic gas and waste residue are directly cooled by a radiation waste pot, and high-temperature sensible heat is recycled to generate high-quality steam; gas-solid separation is performed through a dry deashing process, and a downstream process is proceeded. By utilizing the gasifying process, sensible heat of high-temperature raw gas and high-temperature slag is recycled, high-temperature high-pressure steam can be obtained at the same time, gas-steam cogeneration is realized, water resources are saved, and energy utilization efficiency is improved; the gasifying process has good economic benefitand is reliable in running, environment-friendly and efficient.

The invention provides a mulching film and a preparation method thereof. The mulching film comprises, by weight, 76.5-81.8 parts of linear low-density polyethylene, 15-20 parts of metallocene linear polyethylene, 3-5 parts of high-density polyethylene, 0.02-0.15 part of hindered amine light stabilizer, 0.05-0.15 part of phenolic antioxidant and 0.05-0.2 part of ester-type antioxidant; in particular, the melt flow rate (MFR) of the metallocene linear polyethylene is smaller than or equal to 1.0g/10min, and the density thereof is 0.916-0.922g/cm<3>. The mulching film does not contain ultravioletabsorbing agents and dispersing agents, so that the anti-aging effect is achieved while the production cost is reduced; in particular, the mulching film meets the relevant requirements of the DB65/3189-2014 standard, and can be applied to harsh high-temperature and high-dryness environments such as Xinjiang, thereby having a wide application range.

The invention provides a method for selectively extracting cobalt and nickel from nickel sulfide concentrate. The method comprises the following steps: metal elements in the nickel sulfide concentrate are selectively leached through a superfine grinding-oxygen pressure leaching process to obtain nickel sulfide concentrate leachate, wherein the metal elements at least comprise copper, iron, cobalt, nickel, magnesium and calcium elements; phosphate is added into the nickel sulfide concentrate leachate to generate iron phosphate slag and phosphate slag precipitates so as to remove iron ions and copper ions in the leachate; sodium fluoride is added as a precipitant to carry out precipitation reaction so as to remove calcium ions and magnesium ions in the leachate; and cobalt ions and nickel ions are extracted and separated through an extraction process correspondingly to prepare a cobalt sulfate product and a nickel sulfate product. According to the method, efficient recycling of the nickel element in the nickel sulfide concentrate is achieved, other metal elements are further utilized to reduce environmental pollution, and the resource utilization rate and the utilization value of raw materials are improved.

The invention relates to a heating and cooling air conditioner heat recovery device, which is used for recovering heat energy generated during the operation of a heating and cooling air conditioner so as to heat water. The heating and cooling air conditioner heat recovery device is provided to improve the energy efficiency of heating the water by the heat recovery of the heating and cooling air conditioner and realize a plurality of states such as independent cooling, independent heating, independent water heating, the combination of the three functions, and the like, wherein a first water heat exchanger for heating the water is connected between an exhaust port of a compressor and an input port of a multi-port reversing valve; and an independent water heat exchanging branch is also connected between another reversing port of the multi-port reversing valve and a stop-throttle valve component. The invention also provides an air conditioner heat recovery system consisting of the heating and cooling air conditioner heat recovery device and bearing/guiding water.

The invention discloses a coal gangue grading and quality-grading pyrolysis decarburization and waste heat gradient utilization system and an operation method, and the coal gangue grading and quality-grading pyrolysis decarburization and waste heat gradient utilization system comprises a pyrolysis furnace used for inputting coal gangue and carrying out pyrolysis; an air preheater; the decarburization furnace is used for inputting preheated air; the combustion device is used for inputting pyrolyzed solid materials for combustion decarburization; the pyrolysis gas input device is used for inputting pyrolysis gas and combusting in the oil-gas combustor; the decarburization furnace is used for outputting decarburized ash and flue gas; a slag cooler; a waste heat boiler; heat-exchanged flue gas output by the waste heat boiler is used as a heat source for pyrolysis of the pyrolyzing furnace, and flue gas used after pyrolysis is used as a heat source for preheating of the air preheater. According to the invention, superior combustion conditions are ensured through graded and quality-divided utilization of pyrolysis oil gas and solid materials and gradient utilization of waste heat, and the technical problems of stable ignition and sufficient decarburization of large-scale direct combustion of full-grade coal gangue in the prior art can be solved.