37results about How to "Expand the scope of resource utilization" patented technology

The invention relates to a one-step copper smelting technology and a device thereof. The interior of a furnace body is divided into three zones, namely a smelting zone, a blowing zone and a refining zone, by a retaining wall; and two rows of spray guns which are arranged in a staggered manner and have an included angle with a vertical line are arranged at the bottoms of the zones; return dust is mixed and then added into mixed copper concentrate and a solvent through a charging opening of the smelting zone, oxygen-enriched air is sprayed through the spray guns to carry out self-heating smelting, to generate copper matte; the spray guns in the blowing zone spray oxygen-enriched air so as to blow copper matte into crude copper and slag; the spray guns in the refining zone supply oxygen-enriched air for oxidization, and supply natural gas as a reductant for reduction, and the generated anode copper with high purity is interruptedly discharged form a copper discharging opening, so that the low-altitude pollution problem caused by SO2 can be solved, the operation environment can be greatly improved, the utilization rate of sulfur and heat can be obviously increased, and further the economic benefits can be increased further; in addition, the invention provides a one-step copper smelting technology which is more advanced, shorter in flow, lower in investment, lower in comprehensive energy consumption, higher in recovery rate, and better in comprehensive utilization in comparison with the existing continuous copper smelting technology.

The invention relates to an ore leaching bacteria and a selectivity organism extraction process of low grade zinc sulfide ore; the name of the ore leaching bacteria is Leptospirillum ferrooxidans Retech-STC-1, which is deposited and preserved in China Center for Type Culture Collection (in Wuhan University), the preservation register number is CCTCC No: M208162, the preservation data is October 17th, 2008; in the process, dilute sulphuric acid solution containing special ore leaching microorganism and Fe3+ is utilized to extract the ferreous zinc sulfide ore, the oxidation-reduction potential is controlled in the extraction process by adjusting pH, dripping intensity, follow system and air permeability, so as to realize selective extraction of the zinc sulfide ore. The process has short process flow, simple equipment, low investment, low cost, no pollution, high recovery rate and adjustable production scale, can process the low grade zinc mineral resource which can not be processed by the traditional refractory process, can enlarge the resource utilization range and improve the comprehensive recovery level of the metal zinc.

A process for using specific desulphurization mixed bacterium for high sulfur coal mine biological desulfurization is as follows: ore is crushed to-25mm for heap construction, the heap height is 8-10m, temperature and gas composition induction devices are embedded during heap construction; then spray operation is performed, the spraying intensity is 10-15L / (M<2>.H), the spray solution contains 107-108cfu / mL of specific desulphurization mixed bacterium CGMCC NO.8336, the oxidation reduction potential of the spray solution is more than 700mV (SCE), the spray operation is performed according to the mode of spraying for 7 days and resting for 5 days or spraying for 7 days and resting for 7 days, the in-heap temperature is controlled at 45 to 60 DEG C, and the leaching system pH value is 1.5 to 1.8. The process has the advantages of short process, simple equipment, small investment, low cost, no pollution, larger or smaller production scale, and capability of processing high sulfur coal mine resources which cannot be processed by traditional mineral processing and metallurgical technology, and can expand the resource utilization scope and improve the comprehensive recovery level of the coal mine resources.

The invention relates to a selective bioleaching process of a high-sulphur / copper ratio secondary copper sulphide ore. In the process, microorganisms are utilized to leach the high-S / Cu ratio low-grade secondary copper sulphide ore, and the oxidation-reduction potential in the leaching process is controlled through the measures of regulating the pH, the dripping intensity, the fallow system, the air permeability, the breeding of dominant species, and the like so as to realize the selective leaching of the secondary copper sulphide ore. The process has short flow, simple equipment, low investment, low cost, no pollution, high recovery rate and adjustable production scale, can treat low-grade copper ore resources which cannot be treated by using the traditional selecting and smelting process, the resource utilization range is enlarged, and the comprehensive recovery level of copper metal is improved.

The invention provides a compound fermented fruit wine and a preparation method thereof. The fruit wine is characterized in that cherry tomato juice and pomelo juice used as main raw materials and potassium metabisulfite, pectinase and wine yeast used as auxiliary materials are subjected to sterilization, pectinase enzymolysis, concentration, primary fermentation, secondary fermentation and filtration to obtain a fermentation clear solution; and red date juice is added into the fermentation clear solution for blending and clarification, thus obtaining the compound fermented fruit wine. The preparation method provided by the invention comprises the following steps: respectively smashing cherry tomatoes and pomelos, mixing, and performing potassium metabisulfite sterilization treatment on the mixed juice; after sterilization, performing pectinase treatment, subsequently concentrating the juice until the soluble solid content is 18-22%, and inoculating with the yeast to perform primary fermentation and secondary fermentation; and adding the red date juice into the fermentation clear solution, blending, and clarifying to obtain the fruit wine. The fermented fruit wine provided by the invention has a mellow and fruity taste, contains balanced nutrient contents and has multiple health care effects.

The invention provides a method for preparing a wood / MOF (Metal Organic Framework) functional composite material, which comprises the following steps: adding a precursor solution for synthesizing an MOF material into wood, and carrying out hydrothermal reaction or a physical filling method to prepare the wood / MOF functional composite material. The nano MOF particles are grown in situ or filling wood pores with the nano MOF particles to obtain the wood / MOF functional composite material. The method is easy to operate and low in cost. The defects that powder nano MOF is not easy to recycle and poor in machinability and operability are overcome, and the wood / MOF functional composite material has wide application prospects in the fields of flame retardance, adsorption, catalysis and the like. According to the preparation method, the organic ligand, the metal salt solution and the wood are taken as main raw materials, the synthesized MOF uniformly grows on the wood through a one-step hydrothermal reaction or a physical filling method, the effective load of the MOF active component on the wood can be realized, and the prepared wood / MOF functional composite material has excellent performances of catalysis, flame retardance, adsorption and the like. The raw materials are wide in source, and the preparation method is simple.

The invention discloses an efficient sulfur-oxidizing bacteria with a strain name of Acidithiobacillus thiooxidans Retech DW-II. The strain is preserved in China General Microbiological Culture Collection Center, Institute of Microbiology of the Chinese Academy of Sciences, No.3, Court No.1, Beichen West Road, Chaoyang District, Beijing on September 10, 2014, and has accession number of CGMCCNo. 9625. The invention also provides a rapid heating method for low-sulfur copper mine leaching process in Alpine region. The method comprises the steps of: crushing ore to -50mm, mixing with pyrite powder, conducting sulfuric acid slaking and granulation to improve the permeability of the stock heap and provide sufficient energy for bacteria; and finally adding the efficient sulfur-oxidizing bacteria CGMCC No. 9625. The method speeds up the initial rate of oxidation of the pyrite ore heap, and provides sufficient heat for the stock heap, so that temperature of the stock heap rapidly increases to above 40 DEG C.

The invention discloses a hoop composite insulating brick or building block and manufacturing and using methods thereof. The hoop composite insulating brick or building block is characterized in that: the brick or building block comprises an inner blade block and an outer blade block, wherein a thermal insulation body is arranged between the inner blade block and the outer blade block; the inner blade block and the outer blade block are provided with a top face and a bedding face respectively; at least two hollow holes are formed in the inner blade block and the outer blade block respectively; and a hoop passes through the hollow holes in the inner and outer blade blocks to integrally connect the inner blade block, the outer blade block and the thermal insulation body. In the hoop composite insulating brick or building block, a heat (cold) bridge caused by a brick wall and a built mortar joint in the wall is completely blocked, so that a thermal insulation wall which meets the wall energy-saving requirement is formed after the wall is built, wall thermal insulation construction is prevented from being performed once again, and consequently construction cost is greatly saved; the inner and outer blade blocks are tied by using the hoop, so that the reliable connection of the inner and outer blade blocks is ensured; by adjusting the thickness of the thermal insulation body, the wall energy-saving requirements of different areas can be met; and the thermal insulation body is positioned in the block, so the durability of the thermal insulation body is the same as that of the wall.

The invention provides a process for stage-by-stage biological dump leaching desulfurization of a high-sulfur-content coal mine. By stage-by-stage biological dump leaching removal of inorganic sulfur and organic sulfur, the process comprises the following steps: dump making, acid balancing, inorganic sulfur removal, neutralization of leachate and organic sulfur removal. The method can fulfill the aim of effectively removing sulfur from the high-sulfur-content coal mine. Compared with conventional physical and chemical methods, the method has the advantages of mild condition, low cost, zero discharge of harmful gas and the like, and has a wide application prospect in the field of coal mine desulfurization.

The invention provides a preparation method of bacterial fermentation type fermented black soybeans. The method comprises the following steps: by taking black soybeans as raw materials, crushing, drying, swelling, steaming, inoculating with bacteria and fermenting, washing yeast, flavoring, and sterilizing, wherein in the bacterial fermentation, a compound bacterial fermentation agent consisting of bacillus subtilis RH3519 and micrococcus luteus is used for fermenting to obtain the bacterial fermentation type fermented black soybeans. The fermented black soybeans contain a plurality of types of amino acids, are rich in nutrients and delicious and fragrant in flavor and have layering; and the prepared fermented black soybeans do not contain pathogenic bacteria and harmful bacteria, thus being high in safety performance.

The invention is applicable to the technical field of crude oil exploitation, and provides phenolic resin-acrylamide composite microspheres as well as a preparation method and application thereof. Thepreparation method comprises the following steps: putting an emulsifier into white oil, and stirring and mixing to obtain an oil phase; dissolving acrylamide, phenolic resin, potassium persulfate andN, N '-methylene bisacrylamide in water, and adding hydrochloric acid to adjust the pH value, thereby obtaining a water phase; dropwise adding the water phase into the oil phase for reaction in a protective atmosphere, and then adding azodiisobutylimidazoline hydrochloride for reaction, so as to obtain the phenolic resin-acrylamide composite microspheres. The phenolic resin-acrylamide microspheres are prepared through a self polycondensation reaction of phenolic resin, a self polymerization reaction of acrylamide and a cross-linking reaction of phenolic resin and acrylamide. In addition, thephenolic resin-acrylamide composite microspheres prepared by a secondary initiation method have a 'core-shell structure', so that the phenolic resin-acrylamide composite microspheres have better thermal stability and swelling property.

The invention provides a method for improving iron-carbon micro-electrolysis reaction efficiency by utilizing iron-containing waste acid solution wastewater, and belongs to the field of wastewater treatment and waste acid recycling. According to the method, in the process of removing refractory organic matters in the wastewater by using an iron-carbon micro-electrolysis reaction, before the iron-carbon micro-electrolysis reaction, Fe<2+>-containing waste acid solution wastewater is added in the reaction, and the iron-containing waste acid solution wastewater also contains precious metal elements. According to the method disclosed by the invention, the pH environment of an iron-carbon micro-electrolysis reaction system is adjusted by utilizing an acid system in the iron-containing waste acid solution, and the electron transfer effect of a large amount of Fe<2+> in the acid solution is utilized to inhibit the oxidation of the surface of the iron elementary substance serving as the filler, prevent the formation of a compact oxide layer on the iron-carbon filler and prevent passivation, and therefore, the reaction efficiency of iron-carbon micro-electrolysis is improved; and meanwhile,the activation energy of organic matter chain scission is remarkably reduced under the catalytic action of precious metal, and the reaction efficiency of iron-carbon micro-electrolysis is remarkablyimproved.

The invention relates to the field of environmental protection treatment of sludge, and in particular to a composite packaging material prepared by utilizing municipal sludge and a preparation methodthereof. The composite packaging material contains foamed slurry obtained by mixing and stirring sludge powder, fiber slurry and a foaming agent, wherein the sludge powder is obtained by carrying outphysicochemical treatment for decomposing organic matters on the municipal sludge; and the content of the organic matters in the sludge powder is less than 10%. By fully utilizing cellulose, silicon oxide and various metal oxides in the municipal sludge subjected to the physicochemical treatment for decomposing the organic matters, the obtained composite packaging material has better fire and insect bite preventing properties relative to an ordinary packaging paperboard; microorganisms and the organic matters in the material are decomposed and bacterial virus is eliminated to ensure that the material is not easily affected by external acid and alkali environments and is stable in performance and wide in application range; and the foaming agent is added and the number of bubbles in the obtained material is increased to ensure that the material has better heat insulation effect, high and low temperature resistance and moisture resistance and is wider in the application range.

The invention provides a building material prepared from ferro-nickel slag and relates to the technical field of building materials. The building material contains powder raw materials, a water reducer and water. The building material particularly contains the following raw materials in percentage by mass: 50%-70% of the ferro-nickel slag, 10%-30% of mineral slag, 10%-30% of coal ash, 5%-10% of gypsum and 5%-10% of steel slag. By comprehensively utilizing solid waste such as the ferro-nickel slag and the mineral slag, the prepared building material is environment-friendly, high in strength andgood in performance. Meanwhile, a preparation method provided by the invention is simple and convenient and easy for large-scale production.

The invention provides a method for preparing bacterial fermented black soybean tempeh. The method uses black soybeans as raw materials, and is prepared by crushing, drying, swelling, steaming, inoculating bacterial fermentation, koji washing, seasoning and sterilization, wherein the bacterial Fermentation is carried out by using a composite bacterial starter composed of Bacillus subtilis RH3519 and Micrococcus luteus to obtain the bacterial fermented black soybean tempeh. The black soybean tempeh provided by the invention has many kinds of amino acids, is rich in nutrition, has a fresh and fragrant taste, and has a sense of hierarchy. The prepared black soybean tempeh does not contain pathogenic bacteria and harmful bacteria, and has high safety performance.

The invention discloses an efficient sulfur-oxidizing bacteria with a strain name of Acidithiobacillus thiooxidans Retech DW-II. The strain is preserved in China General Microbiological Culture Collection Center, Institute of Microbiology of the Chinese Academy of Sciences, No.3, Court No.1, Beichen West Road, Chaoyang District, Beijing on September 10, 2014, and has accession number of CGMCCNo. 9625. The invention also provides a rapid heating method for low-sulfur copper mine leaching process in Alpine region. The method comprises the steps of: crushing ore to -50mm, mixing with pyrite powder, conducting sulfuric acid slaking and granulation to improve the permeability of the stock heap and provide sufficient energy for bacteria; and finally adding the efficient sulfur-oxidizing bacteria CGMCC No. 9625. The method speeds up the initial rate of oxidation of the pyrite ore heap, and provides sufficient heat for the stock heap, so that temperature of the stock heap rapidly increases to above 40 DEG C.

The invention relates to a selective bioleaching process of a high-sulphur / copper ratio secondary copper sulphide ore. In the process, microorganisms are utilized to leach the high-S / Cu ratio low-grade secondary copper sulphide ore, and the oxidation-reduction potential in the leaching process is controlled through the measures of regulating the pH, the dripping intensity, the fallow system, the air permeability, the breeding of dominant species, and the like so as to realize the selective leaching of the secondary copper sulphide ore. The process has short flow, simple equipment, low investment, low cost, no pollution, high recovery rate and adjustable production scale, can treat low-grade copper ore resources which cannot be treated by using the traditional selecting and smelting process, the resource utilization range is enlarged, and the comprehensive recovery level of copper metal is improved.

The invention relates to a hydrogen-supplying additive for directional removal of sulfur in high-sulfur coking coal blending and coking, which consists of 45-60wt% regulator and 40-55wt% primary additive, and the regulator is composed of one or more The high volatile coal obtained by pretreatment has a particle size of ≤2mm, an active component content of ≥70wt%, and a volatile content of V daf ≥30wt%, Sulfur S t,d ≤0.7wt%, Ash A d ≤7wt% coal powder component, the primary additive is composed of 10~30wt% waste lubricating oil and / or lubricating base oil, 20~40wt% silicone oil, 5~25wt% anionic emulsifier and 5~25wt% water liquid. Adding the hydrogen-supplying additive to high-sulfur coking coal and other coking coal blending coal blending for coking can realize the directional removal of sulfur in the coking process under the premise of ensuring coke quality, and achieve rational and efficient use of high-sulfur coking coal resources. The purpose of reducing the sulfur content of coke.

The invention provides a caragana fabr. plant bark extract which is prepared by taking caragana fabr. plant bark as a raw material and performing extraction, and the extract comprises, by weight percentage, 1.91-2.42% of beta-sitosterol. Pharmacological experiments prove that the extract is remarkable in antifungal effect and has potential clinical use value. The invention further provides a method for adopting a supercritical CO2 extraction method to extract the caragana fabr. plant bark, and the problems that a conventional organic solvent extraction method is long in time consumption and a poisonous solvent needs to be used are solved.

The invention discloses a bauxite stripping method, and the bauxite can make the caustic alkali combined in produced red mud be lowered. The stripping method is as follows: (A) anterior stage: a boehmite type bauxite, lime and sodium aluminate solution are mixed, and the mixed pulp is heat preserved for long enough time between 90 DEG C and 260 DEG C so that silica in the bauxite is transformed into hydrogarnet as much as possible; (B) posterior stage: then concentrated circulating mother liquid is supplemented to the pulp under such temperature, or the concentrated circulating mother liquid is supplemented to the pulp after the temperature of the pulp is raised between 230 DEG C and 290 DEG C, and finally, the bauxite is stripped for half an hour to three hours under the raised temperature. The molecular ratio aK is more than 4 of the caustic alkali of the sodium aluminate solution mixed with the boehmite type bauxite and the lime in the anterior stage to alumina. The bauxite stripping method has the advantages of simple process, being easily industrialized and low production cost.

The invention relates to a one-step copper smelting technology and a device thereof. The interior of a furnace body is divided into three zones, namely a smelting zone, a blowing zone and a refining zone, by a retaining wall; and two rows of spray guns which are arranged in a staggered manner and have an included angle with a vertical line are arranged at the bottoms of the zones; return dust is mixed and then added into mixed copper concentrate and a solvent through a charging opening of the smelting zone, oxygen-enriched air is sprayed through the spray guns to carry out self-heating smelting, to generate copper matte; the spray guns in the blowing zone spray oxygen-enriched air so as to blow copper matte into crude copper and slag; the spray guns in the refining zone supply oxygen-enriched air for oxidization, and supply natural gas as a reductant for reduction, and the generated anode copper with high purity is interruptedly discharged form a copper discharging opening, so that the low-altitude pollution problem caused by SO2 can be solved, the operation environment can be greatly improved, the utilization rate of sulfur and heat can be obviously increased, and further the economic benefits can be increased further; in addition, the invention provides a one-step copper smelting technology which is more advanced, shorter in flow, lower in investment, lower in comprehensive energy consumption, higher in recovery rate, and better in comprehensive utilization in comparison with the existing continuous copper smelting technology.

A process for biological desulfurization of high-sulfur coal mines using exclusive desulfurization mixed bacteria, which includes: crushing the ore to -25mm to build a heap, the height of the heap is 8-10m, and burying temperature and gas composition sensing devices during the heap; Carry out spraying operation, the spraying intensity is 10~15L / (m2 h), the spraying liquid contains 107~108cfu / mL exclusive desulfurization mixed bacteria CGMCC NO.8336, and the redox potential of the spraying liquid is greater than 700mV ( SCE), according to the spraying system of spraying for 7 days and resting for 5 days or spraying for 7 days and resting for 7 days, the temperature in the pile is controlled at 45-60°C, and the pH value of the leaching system is 1.5-1.8. The process is short, simple in equipment, low in investment, low in cost, and non-polluting. The production scale can be large or small. It can process high-sulfur coal resources that cannot be processed by traditional dressing and smelting processes. It can expand the scope of resource utilization and improve the comprehensiveness of coal resources. recovery level.

The invention provides application of caragana plant bark in antifungal drug preparation, the resource utilization range of the caragana plants is widened, and resource waste is avoided. Pharmacological experiments prove that a drug is significant in antifungal effect and has the potential clinical using value.