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56results about How to "Save precious resources" patented technology

Non-autoclaved waste residue sand lime brick and preparation method thereof

InactiveCN102173701AReduce equipment investment and production costsReduce pollutionSolid waste managementScrapIndustrial waste
The invention discloses a non-autoclaved waste residue sand lime brick and a preparation method thereof. Waste materials discharged in an industry are selected, and a simple and convenient non-autoclaved process is used, so that the production cost and equipment investment of the conventional sand lime brick are greatly reduced and the intensity of a product reaches the standard of a building brick. The non-autoclaved waste residue sand lime brick comprises the raw materials in part by weight or volume: 30 to 300 parts of one or more of tailing sand, wind sand, and waste rock powder, 50 to 500 parts of one or more of active waste residue, 0 to 300 parts of coarse aggregate, 3 to 30 parts of cement, and a proper amount of water. The non-autoclaved waste residue sand lime brick also comprises one or more of the following materials in part by weight or volume: 0 to 300 parts of coagulant material, 0 to 200 parts of carbide slag, and 0 to 200 parts of chemical gypsum. The non-autoclaved waste residue sand lime brick is formed by stirring, shaking and pressing the raw materials. By the method, harmful industrial waste materials can be changed into favorable industrial waste materials, the secondary energy consumption of a steaming and pressing process is saved, the manufacturing method is easy to grasp, materials can be selected flexibly, materials can be selected according to the local conditions, and novel building materials with various specifications can be produced by replacing different moulds.
Owner:刘丽华

Method for preparing kryocide

The invention relates to a method for preparing cryolite, which takes carbon residue of aluminum factories and ammonium fluoroaluminate as raw materials which are then reacted with each other in a solid phase. The method adopts a great deal of waste residue of the electrolytic aluminum factories - the carbon residue and waste residue of the aluminum section industry - the ammonium fluoroaluminate as the raw materials, thereby the method creates a source of raw materials for producing villiaumite, relieves the dependency on fluorite, saves a large number of valuable resources, has low cost, greatly reduces the production cost, and relieves the ambient environmental pollution problem. Carbon powder containing about 10 percent of electrolyte obtained after flotation of the carbon residue can be dried and then used as auxiliary materials for adequate addition when bottom paste is manufactured, and used for building a novel groove. The compositions of electrolyte in a great deal of waste residue produced by the electrolytic aluminum factories - the carbon residue are the cryolite and alumina; the method converts the alumina in the electrolyte into aluminum fluoride; and the cryolite is double salt of sodium fluoride and the aluminum fluoride. Moreover, products during the reaction process of the method can be recycled, thereby the method greatly reduces the production cost to a certain degree, has good social benefit and economic benefit, and is easy to promote and apply.
Owner:DO FLUORIDE CHEM CO LTD

Method for utilizing fingerprint as traffic ticket

InactiveCN101527054ARealize cost-free productionStop ScalpingOther printing matterIndividual entry/exit registersData informationHandling system
The invention relates to a method for utilizing a fingerprint as a traffic ticket. The method comprises the following steps that: a ticket purchaser fills in a ticket purchasing sheet; ticket-selling staff collects a fingerprint of the ticket purchaser, and stores the ticket purchasing sheet and the fingerprint of the ticket purchaser in a ticket database; a ticket processing system compares the stored information with the prior data information and judges whether the ticket purchaser is a repetitive ticket purchaser or a person with low credit standing or not; the ticket is sent to a non-repetitive ticket purchaser with high credit standing; the train number, the seat number, the departure location, the departure time and the arrival location are bond with the fingerprint of the ticket purchaser; when passengers enter a station, the passengers press the fingerprints, and according to the fingerprints, whether the passenger can enter the station or not is checked; when the passengers leave the station, the passengers press the fingerprints, and according to the fingerprints, whether the passenger can leave the station or not is checked; when one passenger traffic work is finished, the ticket processing system automatically carries out the check of passenger departure and arrival; if no passenger departure information is in the ticket database, the passenger is considered as ticket evasion; and corresponding credit standing value of the fingerprint of passenger in the ticket database is reduced.
Owner:董明磊 +2

Intensification smelting technology in blast furnace at superhigh utilization coefficient

The invention relates to a technical project for blast furnace smelting, particularly on the precondition of not increasing smelting device for increasing the foundry iron yield, comprising: (1) large air quantity, reforming D900 draught fan to make the air quantity in air outlet being 750m3, the pressure 310KPa; (2) high air temperature, employing combustion air preheating, automatic boiler, reinforced air heater stove to improve coal gas quality and make sure the dust content in coal gas is below 5mg/m3 ; (3)smelting with less silicon, decreasing the powder content in the furnace-entering ore, increasing the air permeability in the material column, stabilizing the sintered ore proportioning, increasing the quality, alkalinity and intensity of sintered ore gradually, improving the sintered ore reduction, employing sintered ore with low-silicon and low-ferrous iron to control the coke ash content effectively and improve the coke intensity of heat and cold, increasing the press on the top if the furnace, blowing fuel and controlling the theoretical burning temperature in air outlet, and decreasing the furnace temperature gradually on the premise of the condition of furnace is stably proceeded. The invention is characterized by the high ferrous iron yield, low investment and simple process.
Owner:XINXING DUCTILE IRON PIPES CO LTD

Technological method for comprehensively recovering rhenium, sulfur and arsenic through self-heating volatilization of acid mud containing rhenium, sulfur and arsenic in vortex furnace

The invention provides a technological method for comprehensively recovering rhenium, sulfur and arsenic through self-heating volatilization of rhenium, sulfur and arsenic-containing acid mud in a vortex furnace. The method comprises the following steps: drying a rhenium, sulfur and arsenic-containing acid mud raw material until a material discharged from a kiln is loose, adding a slag material, finely crushing, feeding into a vortex furnace, and carrying out volatilization and smelting, carrying out oxidation and exothermic reaction on the furnace material, wherein under the condition that the temperature is increased to 1400 DEG C or above and in an oxidizing combustion atmosphere, all rhenate in the furnace charge can be decomposed and volatilized, arsenic is oxidized into As2O3 steam, sulfur is oxidized into SO2 steam, and the As2O3 steam and the SO2 steam enter flue gas together; and carrying out rhenium and arsenic enrichment on the high-temperature flue gas in a flue gas washing tower, and feeding SO2 into a subsequent desulfurization tower for sulfur recovery. According to the method, the heat efficiency is high, more than 50% of energy is saved, high-value rare elements are saved, the direct recovery rate is about 10-30% higher, precious resources are effectively saved, the waste slag amount is reduced by about 75-90%, the waste slag is ferro-silicon calcium slag which is free of toxic substances and can be utilized, and the problem of secondary environmental pollution in a traditional method is thoroughly solved.
Owner:LEIYANG YANXIN NON FERROUS METALS

Process for processing tussah moth powders

The invention discloses a process for processing tussah moth powders, which comprises the following steps: manually dividing tussah moths which are the raw materials for industrial production of oophagous trichogrammae into male tussah moths and female tussah moths; respectively removing the wings; after using a meat grinder to break the bellys of the female tussah moths, adding water the mass-to-volume ratio of which is 1:2 to immerse the processed female tussah moths, stirring the mixture, then passing the obtained product through a sieve, wherein the aperture of the sieve pore of the sieve is 3*3mm so that the egg granules can pass through the sieve pores and other parts of the tussah moths have larger volume so as to be left in the sieve; collecting the residues of the female tussah moths the eggs of which are removed; drying the collected female tussah moth residues and the male tussah moths at a temperature of between 40 and 60 DEG C; and grinding the dried collected female tussah moth residues and male tussah moths into 200 to 400 mesh of powders the water content of which is lower than 8 percent. The method furthest utilizes the tussah moth residues for the industrial production of the oophagous trichogrammae to process into the tussah moth powders under the condition of not breaking the eggs of the tussah moths. The tussah moth powders can be used as the by product for producing the oophagous trichogrammae. The process has simple process and low cost, and makes waste profitable.
Owner:JILIN AGRICULTURAL UNIV
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