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58results about How to "Increase iron content" patented technology

Purification technique of steel scoria magnetic separation product

The invention discloses a purification technique of steel slag magnetic separation products, which comprises the following steps: (1) the steel slag magnetic separation product is put into a ball mill and water is added, (2) full grinding is processed, the product is discharged from the exhaust end of the ball mill naturally and divided into up-screen product and below-screen product through a cylinder screen, (3) the up-screen product is divided into block iron and tailings by magnetic pulley, the block iron is dried by dryer to make water content below 2%, (4) the product below screen is divided into overflow and sand-returning by a classifier, and the overflow grade of the classifier is controlled by the size of the spray water, which controls the sand-returning grade of the classifier, and (5) the sand-returning is conveyed into the fine powder feed chute through belt, the classifier overflow is conveyed to the thickener through a pump, and the underflow of the thickener is filtered by the filter and conveyed into the tail powder feed chute. The purification technique of steel slag magnetic separation products has the advantages of no non-magnetic and weakly magnetic material loss, full and complete recovery, raising the content of iron of luppen from 60% to 65% to above 90%, raising the grade of the magnetic separation powder from 40% to 50% to above 60%, raising the content of iron of steel slag product completely, and raising the comprehensive utilization ratio of the steel slag.
Owner:鞍钢绿色资源科技有限公司 +1

Method for producing ball iron with iron scale

The invention specifically relates to an approach to produce granular pig iron by oxide iron sheet which belongs to the metallurgical iron making technology field. The invention mainly solves the problem of recycling the waste oxide iron sheet to make steelmaking materials. The special points of the technology are described below: according to the weight unit, the materials are oxide iron sheet (65 per cent to 75 per cent in weight ratio), coal powder (18 per cent to 30 per cent), lime (4 per cent to 8 per cent) and binder (1 per cent to 12 per cent). The above materials are crushed, marbled, reduced and separated to produce finished granular pig iron. The invention is characterized in that: the production has high iron containing but low sulphur and other miscellaneous substances contained, therefore can be taken as the steelmaking material in replacement of waste steel or pig iron, alleviating the tension situation of steel making material lacking; effectively using the mass waste oxide iron sheet of the steel and iron enterprises, the invention turns the waste to the treasure and lowers the production cost greatly; the technical process is easy, the equipment cost is low and the realization is easy. As a newly developed and innovated and advanced technology, the invention is expected to become an important direction of iron steel manufacturing technology.
Owner:HANSTEEL

Method for producing biogas through combined anaerobic fermentation of pig farm manure water treated by biochar-loaded nanoscale zero-valent iron and corn straws

The invention belongs to the field of agricultural waste recycling utilization, and relates to a method for producing biogas through combined anaerobic fermentation of pig farm manure water treated by biochar-loaded nanoscale zero-valent iron and corn straws. The method comprises the following steps of: (1) filtering the pig farm manure water to remove impurities; (2) crushing the corn straws to 1-3cm in length, and drying the corn straws to constant weight; (3) processing the pig farm manure water by the biochar-loaded nanoscale zero-valent iron, and carrying out vibration treatment; (4) uniformly mixing dried straw materials with the pig farm manure water obtained in the step (3), and storing for 2-3 days under a medium temperature condition; and (5) adding an active strain into the mixture obtained in the step (4) according to the total volume of the fermentation material liquid, adding water according to the total mass of the fermentation material liquid to adjust the content of dry matters (TS) of the corn straws to be 6-8%, adjusting the pH value of the fermentation material liquid to be 6-8, and carrying out medium-temperature combined anaerobic fermentation. The method provided by the invention can improve gas production efficiency and shorten the fermentation period.
Owner:RURAL ENERGY & ENVIRONMENTAL PROTECTION INST OF HEILONGJIANG ACAD OF AGRI SCI

Method of safe rice planting on cadmium-contaminated rice field soil by utilizing EDDHA chelate iron fertilizer

The invention discloses a method of safe rice planting on cadmium-contaminated rice field soil by utilizing an EDDHA chelate iron fertilizer, and belongs to the technical field of remediation of heavymetal contamination of soil. The method of safe rice planting on the cadmium-contaminated rice field soil by utilizing the EDDHA chelate iron fertilizer comprises the following steps that the cadmium-contaminated rice field soil is selected, a rice field is irrigated, and a shallow water layer is kept; uniform basal application of the EDDHA chelate iron fertilizer is conducted on the shallow layer, the field is ploughed, so that the EDDHA chelate iron fertilizer is sufficiently mixed with soil of a plough layer uniformly, and a water flooding state continues to be kept; rice seedlings are transplanted and managed by a conventional method, and rice is harvested. According to the method of safe rice planting on the cadmium-contaminated rice field soil by utilizing the EDDHA chelate iron fertilizer, the EDDHA chelate iron fertilizer is applied to the cadmium-contaminated rice field soil, then the rice is planted, the content of iron elements in rice plants can be increased, cadmium element accumulation of the rice can also be reduced, therefore the iron-enriched low-cadmium rice is produced on the low-cadmium-contamination rice field soil, and the safe production standard of the cadmium content of the rice is met.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY

Low-heat high-corrosion-resistance Portland cement and preparation method thereof

InactiveCN109734340AReduce tricalcium contentExtended service lifeCement productionApatiteMaterials science
The invention discloses low-heat high-corrosion-resistance Portland cement and a preparation method thereof. The low-heat high-corrosion-resistance Portland cement is made from, by weight, 62-80 partsof limestone, 0-20 parts of carbide slag, 4-10 parts of clay, 2-5 parts of slag, 2-6 parts of sulfuric acid slag or copper slag, 3-5 parts of lead zinc ore, 3-5 parts of apatite or chlorine salt residue, 1-3 parts of an activator, 1-3 parts of a mineralizing agent, and 0.1-4 parts of a stabilizer. The preparation method includes the steps of grinding the materials, delivering the powders into a homogenizing base for homogenizing; conveying the homogenized material to a suspended preheater and a cracking furnace with the temperature of 850-870 DEG C; transferring to a rotary kiln for calcining, wherein the rotary kiln rotates at 3.2-3.5 rmp, a grate cooler has rod push rate of 9-17 per min, and calcining temperature is 1250-1350 DEG C. The low-heat high-corrosion-resistance Portland cementand the preparation method thereof have the advantages that compressive strength over 28 days is not less than 50 Mpa; compressive strength over 90 days is not less than 70 Mpa; hydration heat over 7days is not higher than 210 KJ/kg; drying shrinkage over 28 days is less than 0.04%; chloride ion diffusion resistant coefficient is less than 0.85*10-12 m<2>/s.
Owner:WUHAN UNIV OF TECH

Apple polyphenol-spirulina extract compound chicken feed for promoting cell metabolism and increasing egg yield as well as preparation method thereof

The invention discloses an apple polyphenol-spirulina extract compound chicken feed for promoting cell metabolism and increasing egg yield as well as a preparation method thereof. Corns are utilized as a main ingredient of the apple polyphenol-spirulina extract compound chicken feed; and skimmed white fish meal, fermented mulberry fruit residue powder, ferric methionine, the apple polyphenols, the spirulina extract, bentonite and so on are combined as auxiliary ingredients so as to carry out modification treatment on the corns. Thus, the properties and the functions of the corn powder are changed so as to enhance the physiological and metabolic functions of the in-vivo cells of the chickens, improve the production properties of the chickens, increase the egg yields of the chickens and improve the egg qualities. Moreover, chicory leaves, violets and sheep blood protein powder are combined, so that the feed is capable of promoting the growth and the weight-gaining of the chickens as well as improving the production properties of the chickens. In addition, the chicory leaves and the violets are capable of improving the digestion functions of the chickens as well as promoting the absorption and the utilization of the chickens to the nutrients; and a bighead atractylodes rhizome extract is capable of improving the immunity of the chickens and promoting body health of the chickens.
Owner:HUAINAN SONGWANG HIGH QUALITY GRAIN PLANTING FARMERS SPECIALIZED COOPERAIVE

Hickory nut kernels

InactiveCN107997095AStrong tea flavorGood selenium supplementFood ingredientsBiotechnologyChinese hawthorn
The invention relates to hickory nut kernels. The hickory nut kernels comprise the following raw materials in parts by weight: 80-100 parts of hickory nut kernels, 60-80 parts of selenium-enriched summer and fall green tea, 5-10 parts of Chinese hawthorn leaves, 3-5 parts of mint leaves, 20-30 parts of nutritive paste, 10-15 parts of white sugar, and 3-5 parts of table salt, wherein the nutritivepaste comprises the following raw materials in parts by weight: 10-20 parts of stone mill flour, 5-10 parts of selenium-enriched corn flour, 5-10 parts of selenium-enriched poria cocos powder, 6-8 parts of selenium-enriched sesame seed powder, 7-9 parts of white sugar, 2-3 parts of table salt, and 0.02-0.04 part of selenium-enriched yeast; and the hickory nut kernels are the hickory nut kernels this season, of which the astringent taste is removed. According to the hickory nut kernels disclosed by the invention, the selenium-enriched summer and fall green tea can be sufficiently used, so thatthe hickory nut kernels are leisure and unique in fragrance, can reduce fat and remove greasy feel, and are green and healthy, idle resources are sufficiently used, and the production cost is reduced;and besides, the hickory nut kernels have the function of strengthening nutrients. Raw material components rich in natural vitamin E and ferrum are used for performing synergistic reaction on selenium elements, so that absorption of the selenium elements by human bodies is promoted, and the hickory nut kernels have good health-care effects on human bodies.
Owner:靖州异溪茯苓食品有限责任公司

Meat quality improvement additive capable of improving the blood replenishing function of chicken meat and preparation method of meat quality improvement additive

The invention discloses a meat quality improvement additive capable of improving the blood replenishing function of chicken meat, and a preparation method of the meat quality improvement additive. The meat quality improvement additive is prepared from the following raw materials in parts by weight: 300-500 parts of Chinese yam starch, 200-300 parts of red bean protein powder, 20-30 parts of apple juice, 3-4 parts of diatomite, 6-8 parts of gluconic acid, 0.5-1 part of a ferrous lactate preparation, 0.05-0.1 part of jasmine flower essential oil, 1-2 parts of pig bone soup, 0.5-1 part of a Chinese wolfberry fruit extract, 2-3 parts of Chinese prickly ash water and 25-45 parts of yolk powder. According to the meat quality improvement additive and the preparation method thereof, the quality of the chicken meat can be improved, the content of iron elements in the chicken meat is increased, the blood replenishing function of the chicken meat to human bodies is improved, the properties of muscle fibers can be improved, the chicken meat is promoted to be tender and juicy, the grade of chicken carcass is increased, the oxidation of fat and cholesterol in the meat quality is reduced, and the fresh keeping time of the chicken meat is prolonged. In addition, through the adoption of the meat quality improvement additive disclosed by the invention, the immune function of chickens can also be strengthened, the resistance capacity of the chickens to bacteria and viruses is strengthened, and the survival rate of chickens is increased.
Owner:FUYANG CITY YINGDONG DISTRICT XINGMU POULTRY PROFESSIONAL COOP
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