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41results about How to "Reduce direct production costs" patented technology

Roadway backfill mining method for coal seams with medium-high thickness

The invention belongs to the fields of coal mining and filling, and in particular relates to a roadway backfill mining method for coal seams with medium-high thickness. The method comprises the following steps: according to a theory of initial roof caving pace of the coal seams and a principle that a filling roadway is smaller than a reserved empty roadway, respectively determining mining width of the filling roadway and the reserved empty roadway; and sequentially mining and filling the filling roadway and the reserved empty roadway in an excavating manner by utilizing a digging-anchoring machine or a continuous miner: firstly mining the filling roadway, fully filling a goaf of the filling roadway with a fluid expansion material, and then solidifying the obtained filling body until the strength is reached; and then mining the reserved empty roadway, and fully refilling or partially filling or not filling the goaf of the reserved empty roadway according to the requirements for protection class of surface buildings. The roadway backfill mining method has the beneficial effects that surface subsidence caused by coal seam mining can be controlled within the minimum allowable degree, recovery rate of coal mining areas 'under three special conditions' (buildings, water and railways) is improved to over 95%, recovery roadways of the mining areas can be reduced, and direct productioncost is lowered.
Owner:ZIBO WANGZHUANG COAL MINE

Cultivation method for interplanting mulberry twig bamboo funguses by simply making shades in leaf mulberry field

InactiveCN103733883AShorten the retting processSkip the stacking procedureHorticultureHyphaTwig
The invention discloses a cultivation method for interplanting mulberry twig bamboo funguses by simply making shades in a leaf mulberry field. The cultivation method includes the steps of section of the mulberry field, cutting of mulberries and arrangement of silkworm breeding layout, preparation for raw materials of culture media of the bamboo funguses, settlement of ripple beds in the mulberry field, selective purchasing of cultures, sowing, growth management of hyphae and management of spring silkworm mulberries, simple shade making in the spring and autumn mulberry field and management of fruiting, and harvesting. The cultivation method has the advantages that mulberry twig raw materials are used for cultivation, the stack retting process of the cultivation media is shortened, and labor capacity and labor work hours are saved; a shading net is used to solve the problem of low shady degrees of the mulberry field after leaf picking so that the mulberry field meets the site requirement for growth and development of the bamboo funguses; mulberry twig scraps are used as main cultivation base materials of the bamboo funguses, so that waste mulberry twigs are fully utilized, and economic benefits are produced; the bamboo funguses are directly interplanted in the mulberry field, and remaining materials of the cultivation media are good organic fertilizers in the mulberry field after the cultivation media provide nutrition for growth and breeding of the bamboo funguses, so that fertility of the mulberry field is greatly improved; comprehensive utilization of resources of silkworms and mulberries is achieved.
Owner:JIANGXI SERICULTURE & TEA RES INST

High-vacuum low-temperature container molecular sieve adsorbing device and filling process thereof

ActiveCN102091437AQuality improvementSolve easy-to-occur quality problemsSolid sorbent liquid separationMolecular sieveNitrogen gas
The invention relates to a high-vacuum low-temperature container molecular sieve adsorbing device and a filling process thereof. The high-vacuum low-temperature container molecular sieve adsorbing device comprises an inner container and an outer container, wherein the inner container is provided with a process manhole and the outer container is provided with an anti-explosion hole. The filling process comprises the steps of: charging nitrogen in an adsorbing agent containing container to reach pressure atmosphere, and then opening the anti-explosion hole, connecting a vacuumized rubber pipe, connecting a corrugated pipe with a molecular sieve, starting a vacuum pump, slowly opening a feeding valve, enabling a molecular sieve adsorbing agent to continuously flow into a molecular sieve device under the action of negative pressure, after the molecular sieve adsorbing agent is filled with the molecular sieve device, dismantling the corrugated pipe, then plugging the corrugated pipe with ascrew plug, finally, stopping the vacuum pump, unplugging the vacuum rubber pipe, and closing the anti-explosion hole, and ending the filling of the whole molecular sieve adsorbing agent. The invention has the characteristic of better adsorbing effect, and has the advantages of increasing the load capacity of the whole vehicle, saving the cost, being more convenient for maintenance, improving thewhole quality of a low-temperature container, improving the labor intensity and the operation environment of workers, enhancing the production efficiency, and being convenient and simple in replacingthe molecule sieve.
Owner:江西制氧机有限公司

Method for preparing ceramic raw material from granite stone sawing slurry stone powder

ActiveCN110328047AHigh yieldImprove the effect of removing impurities and whiteningSolid separationEnvironmental resistanceSlag
The invention provides a method for preparing a ceramic raw material from granite stone sawing slurry stone powder. The method comprises slag separation, grading and three-section magnetic separationand impurity removal. Three-section magnetic separation and impurity removal comprises medium field intensity magnetic separation and two-section high-gradient intensity magnetic separation. Non-magnetic substances obtained after three-section magnetic separation can be directly subjected to water removal and sold as products. According to the method, pollution-free and environment-friendly physical technology is adopted to realize impurity removal and whitening of the granite stone sawing slurry stone powder used for preparing the ceramic raw material. Compared with a traditional process, themethod is short in process, the raw material does not need to be ground, the direct production cost is reduced by 40%, and the whiteness is up to 60%-68%. Large-scale disposal, harmless treatment andresource utilization of granite sawing slurry solid waste are realized at the same time, so that the general industry-level problems that stone sawing slurry pollutes the environment and is a waste of resources are fundamentally solved. Meanwhile, regeneration resources are used for replacing primary ores, so that the problem of feeding and supply of the ceramic industry is solved.
Owner:ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD

Synchronized production method of reducing leaching and oxidizing deironing of cobalt-copper ore

The present invention discloses a synchronized production method of reducing leaching and oxidizing deironing of cobalt-copper ore, including the following steps: crushing and mixing the cobalt-copper ore into cobalt copper slurry, then adding sulfuric acid into the cobalt-copper slurry for leaching with a temperature controlled at 75-85 DEG C, stirring while adding a reducing agent for reducing leaching with an amount of 4-6% of the total cobalt-copper ore, controlling cobalt content in wet residue to be less than 0.2% and copper content less than 0.3%, controlling of the reaction temperature to be 90-95 DEG C and reaction time being 1 to 4 hours, slowly adding alkali to adjust the PH value of the solution to 2.0-3.5, at the same time slowly supplementarily adding cobalt copper slurry for oxidizing deironing according to the content of Fe2+ in solution to make Co3+ and Fe2+ to reach a equilibrium state, and finally performing the solid-liquid separation to obtain qualified leachate. According to the invention, by controlling the electrode potential of the solution, synchronized performance of the reducing leaching process - the oxidizing deironing process is ensured, so direct production cost is significantly reduced, the metal recovery is significantly improved, thus improving production efficiency.
Owner:江苏雄风科技有限公司

Method for separating and recovering cobalt and copper from P204 reverse extraction liquid in cobalt and copper mine wet method smelting process

The invention provides a method for separating and recovering cobalt and copper from P204 reverse extraction liquid in a cobalt and copper mine wet method smelting process. The method for separating and recovering the cobalt and the copper from the P204 reverse extraction liquid in the cobalt and copper mine wet method smelting process comprises the following steps that a copper extraction agent and sulfonated kerosene are added into the P204 reverse extraction liquid for extraction, a PH value is controlled between 1.5 and 2.0 in the process, and extracted copper residual liquid and extractedcopper organic load are obtained; sulfuric acid is added into the extracted copper organic load for reverse extraction to form a copper sulphate solution, and the copper sulphate solution is fed intoa copper salt vaporization system for vaporization to obtain a copper salt product; and the extracted copper residual liquid is heated to 30-60 DEG C, a precipitating agent is added for precipitation, a final PH value is controlled between 3.0 and 4.0, filter pressing and solid-liquid separation are carried out finally to obtain cobalt slag and precipitating cobalt liquid, the cobalt slag is fedto a copper and cobalt leaching system, and the cobalt and the copper are effectively separated. According to the method for separating and recovering the cobalt and the copper from the P204 reverse extraction liquid in the cobalt and copper mine wet method smelting process, the operation process is simple, the production cost is low, the production efficiency is high, and the metal recovery rateis effectively improved.
Owner:江苏雄风科技有限公司

Low-serum culture medium for high-density suspension culture of BHK-21 cells and application of low-serum culture medium in proliferation of FMDVs (foot and mouth disease viruses)

The invention discloses a low-serum culture medium for high-density suspension culture of BHK-21 cells and an application of the low-serum culture medium in proliferation of FMDVs (foot and mouth disease viruses). According to researches on the metabolism level and mutual adjustment of nutritional substances such as glucose and the like in the growth process of the BHK-21 cells, the low-serum culture medium for individual BHK-21 cells is provided and comprises an amino acid part, a vitamin part, a balanced salt part and other additive parts. The culture medium is used for high-density suspension culture of the BHK-21 cells, the effective utilization rate of the nutritional substances by the cells can be greatly increased, the concentration of metabolism byproducts is reduced, and accordingly, the cell culture efficiency is improved; besides, the BHK-21 cells cultured by the culture medium have increased sensitivity for different serums of animals suffering from FMDV, the content of effective antigens 146S of the viruses is substantially increased, the purposes of high cell growth efficiency, cell growth controllability and minimization of the concentration of the metabolism byproducts are achieved, the production efficiency of biological products is higher, the production cost is lower, and the low-serum culture medium has remarkable economic benefits.
Owner:CHINA AGRI VET BIO SCI & TECH +1

4000A-electrolytic furnace for producing oxide molten salt through electrolysis

The invention relates to a 4000A-electrolytic furnace for producing an oxide molten salt through electrolysis, which comprises a negative electrode, a positive electrode, a molten salt, a crucible, a graphite cuvette, a steel jacket and the like. A packing layer is filled between the graphite cuvette and the steel jacket, a throat opening on a furnace panel is quadrate, and a heat radiator is arranged above the furnace panel to play a role in balancing and stabilizing the furnace temperature. The electrolytic furnace has simple and convenient furnace building process steps and a simple furnace building method, the furnace building materials are few in variety, and part of the materials is low in price and is practical. When the furnace life becomes due, only an inner liner of the graphitecuvette is required to be replaced, and the other parts of the furnace body can be used in a long term. The electrolysis temperature is easy to control, the product quality is high, the electrolysis current can reach 4000A, the product yield is high, and the production operations are easy. The product carbon contents are very easy to control, and produced rare earth products have different electrolysis temperatures due to different varieties so that the carbon contents can be different, but the same point is that all the carbon contents can reach less than 0.03, and the carbon contents of theproducts of most varieties can reach about 0.01.
Owner:カン州晨光希土新材料有限公司

Novel making process of cylindrical pin piece of digital transmission connection pin

The invention relates to the field of pin piece manufacturing, in particular to a novel making process of a cylindrical pin piece of a digital transmission connection pin. The process comprises the following steps of: (a) selecting materials: selecting a copper strip with width of 18-27.5 mm and thickness of 0.16-0.22 mm, and placing the copper strip on a swinging feeding device; and (b) high speed precision stamping and deep drawing: feeding the copper strip meeting specifications to a deep drawing progressive die by the swinging feeding device; carrying out continuous deep drawing on the copper strip until an outer pipe finished product meeting the specifications are deeply drawn by a multi-station continuous die. The novel making process provided by the invention has the advantages as follows: the production efficiency is greatly increased, the direct production cost is reduced and high accuracy and stable quality of a product are guaranteed; good mechanical strength and transmission performance are also achieved; it is proved by test that parameters of the product, such as mechanical strength, anti-interference property and the like, all meet specifications and standards in the industry, and compared with a copper rod turned piece, the product has the advantages of more stable performance and strong signal transmission effect.
Owner:CIXI LVLV ELECTRONICS

Method for preparing film coating tablet for treating chronic renal failure

The invention discloses a method for preparing a film coating tablet for treating chronic renal failure. The method comprises the following steps: proportioning various crude medicines of rhubarb, astragalus root, white mulberry root-bark, kuhseng, radix codonopsis pilosulae, white atractylodes rhizome, tuckahoe, prepared fleece flower root, white peony root, radix salviae miltiorrhizae, rhizoma ligustici wallichii, chrysanthemum, pinellia, plantain, radix bupleuri and licorice according to a conventional method, adding water, decocting, filtering, merging decoction, concentrating, drying and pulverizing to obtain medicinal extract powder; the method is characterized by also comprising the following steps: adding microcrystalline cellulose into the medicinal extract powder, mixing evenly, preparing a soft material by an ethanol water solution, granulating, drying, straightening, adding magnesium stearate, mixing evenly, tabletting to obtain a tablet agent and then coating a film coating by a film coating material; the mass ratio of the medicinal extract powder to the microcrystalline cellulose to the magnesium stearate to the film coating powder is 60-75:20-36:0.5-1.3:2-6; and the conditions of the technical parameters of the coating process for coating the film coating are as follows: the concentration of coating liquid prepared by the film coating material is 10-20wt%, the temperature of a tablet bed is 45-48 DEG C, and the liquid spraying speed of the coating liquid is 4-5ml/min.
Owner:东方药林药业有限公司

Grate bar material of trolley of sinter machine and production method of grate bar material

The invention discloses a grate bar material of a trolley of a sinter machine. The grate bar material is good in usage effect and low in production cost. The grate bar material is characterized by comprising the following chemical components in percentage by mass: 1-1.5% of C, 1.0-2.0% of Si, 16-20% of Cr, 3.0-7.0% of Al, 0.05-0.15% of rare-earth elements, 0.5-1.0% of Mn, less than 0.02% of S, less than 0.05% of P and the balance of Fe, and the sum of all the components is 100%. The production method comprises the steps of modelling, melting and casting. The service life of grate bars produced by the production method disclosed by the invention is equal to or greater than 12 months, the hardness HBS is equal to or greater than 282, and the fracture rate (when the grate bars drop from a 2-meter-high place) is reduced to 0 from about 5% in orignal. The dosage of precious metal such as chromium and nickel is substantially reduced, and the production technology is simplified, so that the direct production cost is reduced by over 20% than that of an original technology; after about 200 tons of the grate bars are produced and used by users, the response is very good, the economic benefits of enterprises are improved, and the market competitiveness is enhanced.
Owner:桃江新兴管件有限责任公司

A low-serum medium for high-density suspension culture of bhk-21 cells and its application in the proliferation of foot-and-mouth disease virus

The invention discloses a low-serum culture medium for high-density suspension culture of BHK-21 cells and an application of the low-serum culture medium in proliferation of FMDVs (foot and mouth disease viruses). According to researches on the metabolism level and mutual adjustment of nutritional substances such as glucose and the like in the growth process of the BHK-21 cells, the low-serum culture medium for individual BHK-21 cells is provided and comprises an amino acid part, a vitamin part, a balanced salt part and other additive parts. The culture medium is used for high-density suspension culture of the BHK-21 cells, the effective utilization rate of the nutritional substances by the cells can be greatly increased, the concentration of metabolism byproducts is reduced, and accordingly, the cell culture efficiency is improved; besides, the BHK-21 cells cultured by the culture medium have increased sensitivity for different serums of animals suffering from FMDV, the content of effective antigens 146S of the viruses is substantially increased, the purposes of high cell growth efficiency, cell growth controllability and minimization of the concentration of the metabolism byproducts are achieved, the production efficiency of biological products is higher, the production cost is lower, and the low-serum culture medium has remarkable economic benefits.
Owner:CHINA AGRI VET BIO SCI & TECH +1

Ball feeder control system based on DCS system platform

PendingCN111983982AAvoid problems that require a lot of manual handlingImprove physical and mental health indexTotal factory controlProgramme total factory controlAutomatic controlControl system
The invention discloses a ball feeder control system based on a DCS platform, belongs to an ore dressing automatic control technology, and particularly relates to an automatic steel ball feeding system of a ball mill. The system comprises a steel ball counting and outputting device and a DCS detection control system. According to the system, a timing period new ore feeding amount automatic calculation unit, a steel ball demand quantity automatic calculation unit, an actual steel ball adding automatic control unit and an automatic period circulation control unit are arranged, the number of thesteel balls needing to be added is calculated, a command is sent out to enable the steel ball output device to add the steel balls into the ball mill, the adding amount is metered, and is fed back tothe actual steel ball adding automatic control unit, and the next adding period is entered after adding is completed. According to the invention, the labor cost is reduced, the safety production indexis improved, the direct production cost is reduced, the system operation difficulty and maintenance difficulty of operators and automation technicians are reduced, and the high efficiency of the steel ball adding system is improved.
Owner:云南迪庆有色金属有限责任公司

Synchronized production method of reducing leaching and oxidizing deironing of cobalt-copper ore

ActiveCN103060550BHigh recovery rateSolve the disadvantages of excessive consumptionProcess efficiency improvementElectrode potentialReaction temperature
The present invention discloses a synchronized production method of reducing leaching and oxidizing deironing of cobalt-copper ore, including the following steps: crushing and mixing the cobalt-copper ore into cobalt copper slurry, then adding sulfuric acid into the cobalt-copper slurry for leaching with a temperature controlled at 75-85 DEG C, stirring while adding a reducing agent for reducing leaching with an amount of 4-6% of the total cobalt-copper ore, controlling cobalt content in wet residue to be less than 0.2% and copper content less than 0.3%, controlling of the reaction temperature to be 90-95 DEG C and reaction time being 1 to 4 hours, slowly adding alkali to adjust the PH value of the solution to 2.0-3.5, at the same time slowly supplementarily adding cobalt copper slurry for oxidizing deironing according to the content of Fe2+ in solution to make Co3+ and Fe2+ to reach a equilibrium state, and finally performing the solid-liquid separation to obtain qualified leachate. According to the invention, by controlling the electrode potential of the solution, synchronized performance of the reducing leaching process - the oxidizing deironing process is ensured, so direct production cost is significantly reduced, the metal recovery is significantly improved, thus improving production efficiency.
Owner:江苏雄风科技有限公司

A simple cultivation method for making shade and interplanting mulberry branches and bamboo fungus in mulberry field for leaves

InactiveCN103733883BShorten the retting processSkip the stacking procedureHorticultureNutritionHypha
The invention discloses a cultivation method for interplanting mulberry twig bamboo funguses by simply making shades in a leaf mulberry field. The cultivation method includes the steps of section of the mulberry field, cutting of mulberries and arrangement of silkworm breeding layout, preparation for raw materials of culture media of the bamboo funguses, settlement of ripple beds in the mulberry field, selective purchasing of cultures, sowing, growth management of hyphae and management of spring silkworm mulberries, simple shade making in the spring and autumn mulberry field and management of fruiting, and harvesting. The cultivation method has the advantages that mulberry twig raw materials are used for cultivation, the stack retting process of the cultivation media is shortened, and labor capacity and labor work hours are saved; a shading net is used to solve the problem of low shady degrees of the mulberry field after leaf picking so that the mulberry field meets the site requirement for growth and development of the bamboo funguses; mulberry twig scraps are used as main cultivation base materials of the bamboo funguses, so that waste mulberry twigs are fully utilized, and economic benefits are produced; the bamboo funguses are directly interplanted in the mulberry field, and remaining materials of the cultivation media are good organic fertilizers in the mulberry field after the cultivation media provide nutrition for growth and breeding of the bamboo funguses, so that fertility of the mulberry field is greatly improved; comprehensive utilization of resources of silkworms and mulberries is achieved.
Owner:JIANGXI SERICULTURE & TEA RES INST

Production method for special strontium chloride for liquid crystal

The invention relates to a production method for a special raw material of strontium chloride hexahydrate for a liquid crystal product. The production method comprises: adopting strontianite and hydrochloric acid as raw materials to obtain a mixed solution; condensing the mixed solution to 40-45 Baume degrees, then cooling the condensed solution to a temperature less than 10 DEG C to carry out crystallization; dissolving the crude strontium chloride in pure water, then adjusting the concentration of the strontium chloride solution to 40 Baume degrees, heating to the temperature more than 90 DEG C; adding an assistant material of strontium hydroxide according to a certain ratio to the heated solution; adjusting a pH value of the resulting solution to more than 12; continuously heating until the solution is boiled, then standing for 1-2 hours, carrying out pressure filtration; carrying out cooling and recrystallization; carrying out centrifugation, drying and packaging to obtain the finished product. According to the present invention, the performance indicators of the product are far higher than the industry standard; the produced product through the method provided by the present invention has stable product quality, significant fluctuate of the product quality can not be generated; with adopting the method provided by the present invention, the direct production cost is less than 5000 yuan per ton, and is reduced by more than 1000 yuan per ton compared to the direct production cost by adopting the industrial strontium carbonate as the raw material; the method has a good market promotion value.
Owner:CHONGQING YUANHE FINE CHEM
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