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 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 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 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 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.