32results about How to "To achieve the purpose of comprehensive utilization of resources" patented technology

The invention relates to a method for preparing green seed curtain with water absorber, slow-release fertilizer and protector, wherein the method comprises that: the prector comprises 5-20% pesticide, 5-20% herbicide, 3-10% antimold, 1-5% diacid, 1-5% hydrazides, 0.01-0.1% crosslinker, and 40-84% porous adsorption material. The invention coats one adhesive layer on the degradable plastic film; compresses the fiber layer on it and holes; coats adhesive layer on it; sprays needed plant seed, protector, absorber, and slow-release fertilizer on it; compresses the fiber layer. The invention can reduce waste water discharge, high yield, etc.

The invention provides a method for extracting pleurotus eryngii polysaccharide from pleurotus eryngii leftovers by using subcritical water. The method comprises the following steps of: feeding the pleurotus eryngii leftovers into an extraction kettle; feeding deoxidized deionized water according to a material-liquid mass volume ratio of 1:(5-30); controlling the extraction pressure to be 3-10MPa, the temperature to be 100-250 DEG C and the extraction time to be 10-60min; filtering, cooling and centrifuging; carrying out ultrafiltration by using an ultrafiltration film of which the molecular weight cut-off is 100-300kD; cutting off the filtrate by using an ultrafiltration film of which the molecular weight cut-off is 3-10kD; feeding the crude polysaccharide cut-off liquid into an anion exchange resin column; and eluting by using deionized water; and concentrating under reduced pressure and drying the collected polysaccharide eluate so as to obtain a pleurotus eryngii polysaccharide product. According to the method, a subcritical water extraction technique is combined with the separation means of ultrafiltration edulcoration and resin absorption decoloration, no organic solvents are used in the whole process, the extraction process is green and environment-friendly, and the pleurotus eryngii polysaccharide is high in purity and is applicable to industrial production.

The invention discloses a method for extracting, separating and purifying flavonoids from orange peel. In the method, the method for extracting an organic solvent is adopted and extraction is performed under the most optimal process conditions of extraction temperature of 90 DEG C, extraction time of 5 hours, 3 extraction times, 95 percent of alcohol concentration and a ratio of liquid to material of 1:30. The separation and purification adopt macroporous absorbent resin distributed elution to finally obtain orange flavonoids having purity of 90 percent. The method has the advantages of obtaining relatively higher yield and purity, utilizing industrial wastes, reducing environmental pollution and fulfilling the aim of resource comprehensive utilization.

The invention provides a method for rapidly manufacturing industrial salt by utilizing sylvine mine and a device, belonging to the technical field of comprehensive utilization of mineral salt and brine. The method for manufacturing the industrial slat is as follows: the solution mining is carried out on the sylvine mine and brine is extracted, the brine is initially concentrated by low grade heatenergy and then is evaporated step by step to obtain products including carnallite, bischofite and the like; desalination water and condensate water are circulated and used for solution mining; and waste heat is simultaneously recycled. The device for manufacturing industrial salt comprises a heater, a desalination apparatus and a heat exchanger. The invention has simple process route, high efficiency of production process, is convenient to use the low grade heat energy, has the energy saving advantage, can extract various inorganic salt products by classification and realizes the comprehensive utilization of energy sources and resources.

The invention discloses a device for preparing sandy cryolite from fluoride waste water. The device comprises a fluidized bed reactor, a waste water tank, a chemical box and a water collecting box, wherein a water inlet of the fluidized bed reactor is connected with the waste water groove through a water inlet pump; a chemical inlet of the fluidized bed reactor is connected with the chemical box through a chemical feeding pump; a water outlet of the fluidized bed reactor is connected with the water collecting groove; a backflow outlet of the fluidized bed reactor is connected with a backflow inlet of the fluidized bed reactor through a backflow pump; cryolite crystal seeds are arranged in the fluidized bed reactor; a sampling opening is formed in the fluidized bed reactor. The invention also provides a method for preparing the sandy cryolite from the fluoride waste water. The fluorine can be recovered from the waste water for preparing the sandy cryolite.

The invention discloses an ore selection method for treating tin, lead and zinc polymetallic oxidized ore. The ore selection method includes: firstly, crushing and ball-milling raw ore; then directly subjecting the raw ore subjected to ball-milling to lead and zinc oxide ore mixed floatation and feeding floating ore into foam products; feeding products in a floatation tank to a primary table concentrator for gravity concentration to obtain tin concentrate, first-section middlings and tailings; feeding the first-section middliings to a secondary table concentrator for gravity concentration to obtain tin concentrate, second-section middlings and tailings; subjecting the second-section middlings to grinding and then combining the same into the ore subjected to lead and zinc oxide mixed floatation. The foam products which are silica tailings are subjected to reverse floatation to get rid of silica, so that the products in the flotation tank are final lead and zinc mixed concentration. By the adoption of lead and zinc mixed floatation and reverse flotation of the lead and zinc mixed concentrate to get rid of the silicon, recovery rate of useful metals is increased in the mixed floatation, types and dosage of medicament are reduced, environmental pollution is low, and purposes of conforming to the state policy of cleaner production and circular economy and achieving energy conservation, emission reduction, consumption reduction and comprehensive utilization of resources are achieved.

The invention provides seawater processing technology, in particular to a method of removing calcium sulphate by use of brine. 5 to 13 degrees Be brine is added with industrial crude salt to make the brine concentration to 17 to 25 degrees Be and dissolve the calcium sulphate. According to the rule of brine dissolving salt and the salting-out theory as well as the common ion effect theory, the composition of the(5 to 13 degrees Be) brine is changed by adding the industrial crude salt to increase the sodium chloride content in the brine so as to increase the brine concentration up to 17 to 25 degrees Be, thereby reducing the solubility of the calcium sulphate and dissolving most of the calcium sulphate; besides, the dissolved brine can be directly used for producing the vacuum refined salt.

The invention relates to a new process for wastewater recycling comprehensive treatment in alga processing industry. The process comprises the following steps of: desilting, regulating, adding chemicals, performing air floating, hydrolyzing, performing biochemical treatment, performing sand filtration, softening resin and recycling. The process has the advantages that (1) wastewater generated by processing brown algae can be treated, and alga wastewater which is generated by the processing of red algae, green algae and blue algae, alga leisure foods and convenience foods can also be treated, so that the range of the wastewater treatment of alga processing is enlarged; (2) according to the steps of adding the chemicals and performing the air floating, one of the chemicals is a calcium chloride solution, and the process is economic and environment-friendly, and has a good treatment effect compared with other wastewater treatment processes of using a polyaluminium chloride solution; and (3) the wastewater treated by a resin softening technology can be recycled completely, so that water resources can be saved to fulfill the aim of the recycling comprehensive utilization of the alga wastewater.

The invention discloses an ore muck separation system which comprises a material tank and a grizzly feeder. A crushing machine is arranged at the position of a material outlet of the grizzly feeder, a sieving device is arranged at the position of a hopper below a grizzly sieving face of the grizzly feeder, a belt conveyor I is arranged at the position of a material outlet of the sieving device, an aggregate storage bin is arranged at a discharging end of the belt conveyor I, a belt conveyor II is arranged at the position of an outlet below the sieving face of the sieving device, and a muck bin is arranged at a discharging end of the belt conveyor II. Compared with ore muck separation systems, the ore muck separation system has the advantages that stripping aggregated rock generated during ore extraction is comprehensively treated by means of a winnowing process, and selected muck contains siliceous corrective additions required for firing clinker, so that the selected muck can be used as a raw material for producing Portland cement clinker, the purpose of comprehensive utilization of resources is achieved, problems that the muck in ores pollutes environment, occupies land and wastes resources are solved, and comprehensive utilization of the ore resources is achieved.

The invention relates to the technical field of chemistry and chemical engineering, and discloses a method for synthesizing 2,4-dinitro-6-bromoaniline by using bromamine acid product wastewater. The method comprises the steps of 1, adding sodium cyanide for reaction, synthesizing a disperse dye from byproducts in mother liquor and separated trace main products, filtering, and washing a filter cake with hot water to obtain the disperse dye; 2, adding an oxidizing agent into the filtrate and the washing liquid to oxidize and remove sodium cyanide, then reacting with 2,4-dinitroaniline, pulping in a sulfuric acid medium, dropwise adding sodium chlorate, reacting at the temperature of 35-75 DEG C, filtering the reaction liquid after bromination, washing a filter cake until the pH value is 6-7, and drying to obtain the product 2,4-dinitro-6-bromoaniline; and 3, decolorizing the mother liquor with activated carbon, performing membrane treatment, concentration and separation, recycling low-concentration salt water, and spraying high-concentration salt to be dry to serve as industrial salt (or serving as an active or acid dye assistant for internal digestion of a company). The problems of high COD and high-salt mother liquor wastewater of bromamine acid dye products in the prior art are solved.

The invention discloses a xanthic acid-based attapulgite adsorbent. The adsorbent is prepared from attapulgite, sodium hydroxide, carbon disulfide, soluble magnesium salt and deionized water. The invention also discloses a preparation method of the xanthic acid-based attapulgite adsorbent. The preparation method comprises the following steps: dispersing and alkalifying attapulgite, then subjecting attapulgite to reaction with carbon disulfide, then carrying out transformation by utilizing magnesium salt to generate a magnesium salt solution of xanthic acid-based attapulgite and finally carrying out washing and drying, thus obtaining the xanthic acid-based attapulgite adsorbent. The xanthic acid-based attapulgite adsorbent is used for removing dyes in wastewater. The xanthic acid-based attapulgite adsorbent provided by the invention has strong dye adsorption capacity, short adsorption time and high adsorption capacity. The preparation method is simple and practicable to operate and rapid and convenient to operate and has the advantages of high dye decolorization rate and easiness in solid-liquid separation after adsorption.

The invention discloses a multifunctional dining table with garbage collection function. The invention belongs to the technical field of food and beverage, comprising a support column of a hollow dining table, a table top arranged above the support column of the dining table, a door for opening and closing is arranged on the support column of the hollow dining table, a heat preservation area is arranged at the center of the table top, a plurality of electromagnetic stoves are uniformly arranged around the table top, and one end of each electromagnetic oven close to the heat preservation area is provided with a garbage inlet. The invention is provided with a garbage inlet and a garbage sliding bin matched with the garbage inlet, A garbage bin is arranged below the garbage sliding bin, so that the rubbish generated on the dining table does not have to be piled on the table, The desktop is clean and tidy while avoiding placing a large number of garbage cans beside the seats, which affectsthe comfort of the diners, and a peculiar smell suction warehouse with carbon residue is arranged, and the peculiar smell is eliminated by using the carbon residue discarded from the kitchen, so thatthe peculiar smell is eliminated, the comfort degree is increased, and the purpose of comprehensive utilization of resources is achieved at the same time.

The invention discloses a deep metamorphic clay type gold ore leaching method with high recycle rate, comprising: breaking raw ore, and adding lime to the broken fine-grain ore; adding thin saw dust to the obtained fine-grain ore, and mixing well; adding cement to the fine-grain ore, and granulating with a granulating machine; piling coarse-grain ore at the bottom, and placing fine-grain pellets above the coarse-grain core for heaping; sprinkling and heap leaching with cyanides to leach out elemental gold. In the heap leaching and gold leaching process, gold in the ore is efficiently recycled. By means of adding the saw dust and cement to granulate and pelletize for heaping and leaching, permeability of the heaped ore and chemicals consumption for slurry are optimized, usage of chemicals is reduced, leaching rate and leaching recycle rate are increased, and residual leachate after leaching is simple to treat. The national policies for clean production and cyclic economy are met, and energy conservation, emission reduction and resource comprehensive utilization are achieved.

The invention provides a method for cooperatively treating electrolytic manganese residue by a dry method rotary kiln cement plant production line. The method comprises the steps that in the dry method rotary kiln cement plant production line which operates normally, the electrolytic manganese residue is continuously fed into a kiln tail smoke chamber of dry method rotary kiln production line equipment, meanwhile, oxidizing atmosphere calcinaiton in a rotary kiln and kiln tail draught fan breezing are controlled, and normal calcinaiton of clinkers in the kiln and the stable operation of the rotary kiln cement plant production line are maintained. The method is simple to operate, the investment in technological upgrading is small, the disposal quantity of the manganese residue is greater, no second pollution generates, resource utilization of protogenetic electrolytic manganese residue and stocked or discarded electrolytic manganese residue can be fully achieved, and the protection of asocial ecological environment and a natural environment is facilitated.

A homogenization pile metering checking device consists of a belt, a conveyor beam frame, a supporting roller group, a metering device, a supporting roller group support and a speed measuring device. The homogenization pile metering checking device is installed on each belt conveyor for raw material conveying and can accurately check and meter the weight of a raw material after speed, time and the weight ratio of the raw material in the process are calculated, quantitative management is achieved, manpower and material resources are saved, mine waste residues are fully utilized, and the purpose of comprehensive resource utilization is achieved.