50results about How to "Good prospects for development and utilization" patented technology

The invention discloses a method for refined purifying diatomite from diatomaceous clay in Miyi County of Sichuan Province. According to the present invention, diatomaceous clay in Miyi County of Sichuan Province is adopted as a raw material. The method comprises: adding a dispersant; carrying out hydraulic classification and ultrasonic cleaning to prepare a diatomite concentrate containing more than 80% by mass of SiO2; further carrying out low temperature calcination at a temperature of 650-700 DEG C; carrying out a acidification to prepare a refined diatomite concentrate containing more than 90% by mass of the SiO2. Because diatom of the diatomaceous clay in Miyi County of Sichuan Province is small, and adhering clay particles are weeny (average particle diameter is about 2 [mu]m), the diatom and the adhering clay thereof can be effectively separated through crushing, activating dispersant processing, ultrasonic water processing, calcining and acidifying. With the present invention, the mass percentage of the SiO2 of the diatomite is improved; impurity content is reduced; pollution-free technology requirement is reached; and resources rational utilization is guaranteed.

The invention relates to the technical field of medicament, providing a novel application of coumarin compound imperatorin in preparing a medicament for preventing and treating virus hepatitis and resisting immunological liver injury or chemical liver injury. Pharmacological tests prove that the imperatorin has stronger activity of inhibiting hepatitis B surface antigen (HbsAg) and hepatitis B virus e antigen (HbeAg) and resisting the immunological liver injury or the chemical liver injury, so the imperatorin can be used for preparing the medicament for preventing and treating the virus hepatitis and resisting the immunological liver injury or the chemical liver injury. The imperatorin has the advantages of convenient preparation, wide sources, low price and high safety. The invention provides the novel application of the imperatorin, and provides a new medicinal source for preventing and treating the virus hepatitis and resisting the immunological liver injury or the chemical liver injury.

The invention discloses a preparation method of okra fruit powder. The preparation method comprises the following steps: A, drying and crushing okra fruits, namely drying the okra fruits after being cleaned, air drying for 10-14h at the temperature 55-65 DEG C, and crushing; B, carrying out enzymatic hydrolysis, namely adding the crushed okra fruits into deionized water with the ratio of the crushed okra fruits to the deionized water to be 1g to 80mL, stirring to obtain slurry, adding cellulose accounting for 0.2-0.6 percent of the slurry and pectinase accounting for 0.1-0.3 percent of the slurry in the slurry, and carrying out the enzymatic hydrolysis for 1.0-2.0h at the enzymatic hydrolysis temperature of 50-55 DEG C; C, vacuum filtering the slurry after the enzymatic hydrolysis; D, blending, namely adding a drying aid into the slurry after filtering, wherein the drying aid is maltodextrin accounting for 5-10 percent of the slurry; and E, spray drying, namely drying the slurry after blending by utilizing a spray drying machine to prepare the okra fruit powder, wherein the temperature of a spray drying inlet in the spray drying machine is 160-170 DEG C. According to the preparation method disclosed by the invention, the nutritional and healthy components of the okra fruits are kept, and the prepared okra fruit powder is good in instant solubility at normal temperature, easy to absorb and convenient to eat and is also capable of keeping the original nutritional flavor to the maximum.

The invention relates to treatment methods for electroplating wastewater and particularly relates to a method for treating electroplating chromium-containing wastewater. The method comprises the following steps: (1) adding a reducer into the chromium-containing wastewater; (2) carrying out continuous stirring, and adding lime or sodium hydroxide into the mixture; and (3) then, carrying out standing precipitation for 10 to 30 minutes, carrying out filtration, adjusting the pH of the filtrate to be neutral, and then, carrying out draining, wherein the reducer contains the ingredients in percentage by weight: 20% to 80% of sodium thiosulfate, 2% to 20% of ascorbic acid, 2% to 20% of oxalic acid, 2% to 10% of glucose, 2% to 20% of starch and 10% to 60% of ferrous sulfate. By adopting the method disclosed by the invention, sexavalent chromium is reduced to trivalent chromium through electron acceptance, a linkage reduction process is formed in the participation of ferric ions, and the sexavalent chromium is effectively reduced in a weak acid medium, so that energy is saved, the processing steps are simple, and the popularization prospect is good.

The invention relates to a method of assisting pollination of hybrid brassica juncea var. tumida Tsen et. Lee by utilizing houseflies. The method includes (1) selecting a base and a field, (2) selecting a variety, (3) sowing, (4) performing field planting, (5) breeding the houseflies, (6) building a gauze shed, (7) allowing the houseflies to perform pollination, (8) killing the houseflies, (9) performing field management and (10) harvesting seeds. The method has advantages of simple operation, a high pollination speed, and uniform, centralized and accurate pollination, saves the manual cost, overcomes problems of poor pollination effects, a low hybrid seed yield, and the like, and provides a pollination technique which is high in pollination efficiency, simple and feasible for better application in production.

The invention discloses benzene series degradation bacteria FB1, as well as a screening method thereof, and an application in degradation of the benzene series. The benzene series degradation bacteriaFB1 belong to Pseudomonas viridilivida, assigned the accession number CCTCC No: M2018347. The screening method includes: enriching, acclimatizing, separating and purifying the bacteria from contaminated soil sample around a coking plant. In the invention, the soil is extracted from benzene series contaminated farmlands around the coking plant and the benzene series degradation bacteria FB1 are screened out from the soil, so that by means of the FB1, the benzene series contaminated soil can be biodegraded, thus purifying and remediating the soil. The method is low in operation cost, is insignificant in negative influence on environment, and has excellent development and application prospect.

The invention discloses a method for preparing a feed antibacterial agent by absorbing and grafting potassium diformate on an epidesmine molecular screen. Regarding the defects that heavy metals in a silver zeolite antibacterial agent easily deposit in a body and cannot be applied to a feed, and the acidating agent potassium diformate cannot plays roles in intestinal tracts, the method takes the modified epidesmine as a carrier to adsorb the acidating agent potassium diformate so as to prepare the feed epidesmine antibacterial agent. Acidity detection and in vitro antibacterial tests indicatethat: the feed epidesmine antibacterial agent has sustained release performance, has an excellent bacteriostasis effect to escherichia coli, and can prevent and treat diarrhea caused by the escherichia coli.

The invention discloses a method for separating, purifying and identifying bacteria with super selenium endurance. The method includes the following steps of preparing selenium-rich soil suspension, carrying out enrichment culture, carrying out subculture, diluting a spread plate, carrying out plate streaking, activating, gram staining, total DNA extracting and 16S rDNA gene amplification for identification. The bacteria which have super selenium endurance and live in a selenium-rich environment are adopted, and the method has the advantages that selenium endurance is superhigh, material cost is low, an experiment method is simple, and environment pollution is avoided.

The invention relates to a method for synthesizing lactosucrose by the enzyme method, which is characterized by comprising the following steps: (1), equivalent amounts of lactose and sucrose are prepared into mixed sugar with the final concentration of 30%-60% and pH value of 6.5-7.5 by using a PBS solution; (2) the mixed sugar is mixed with crude enzyme containing Beta-fructofuranosidase, and the volume ratio of the mixed sugar to the crude enzyme is 3:1-3:5; and (3) the mixture reacts at a temperature of 30 DEG C to 45 DEG C for 12-32 hours, and after the completion of enzymatic reaction, the enzyme inactivation is carried out at a temperature of 80 DEG C to 100 DEG C for 10 to 20 minutes, the centrifuging is carried out at a speed of 3000-6000r / min for 20-40 minutes, and protein is removed to obtain a lactosucrose solution with the content of 15% to 28%. The invention has the advantages of simple process, low cost and the like, and the lactosucrose yield is further improved.

The invention relates to an efficient petroleum hydrocarbon degrading bacterium as well as a screening method and application thereof, the petroleum hydrocarbon degrading bacterium is Rhodococcus sp.OBD-3, the Rhodococcus is gram-positive bacterium, the strain form is rod-shaped, the colony form on a Luria-Bertani solid culture medium is regular, cheese-colored and round, and the colony surface is dry, rough and non-transparent. The bacterium can be applied to degradation of organic compounds; and it is identified that when the efficient petroleum hydrocarbon degrading bacterium Rhodococcus sp.OBD-3 is cultured in an aerobic and dark mode at the temperature of 28 DEG C, the pH value of 8.0 and the total salinity of 1%, crude oil with the concentration of 1 g / L can be degraded, the degradation rate within 3 days is 75.8%, and the degradation rate within 7 days is 89.1%. The rhodococcus can efficiently degrade petroleum hydrocarbon under the conditions of a wide temperature range (15-37 DEG C), a pH range (pH 6.0-9.0) and a salinity range (the total salinity is 1%-7%), has small negative influence on the environment, can be applied to biological remediation of general soil or water environment, saline-alkali soil and offshore petroleum pollution, and has good development and utilization prospects.

The invention relates to the technical field of needle mushroom authentication, in particular to a characteristic nucleotide sequence, primer, kit and method for authenticating Flammulina fennae. The characteristic nucleotide sequence basically comprises SEQ ID NO.1 or part of SEQ ID NO.1 or basically comprises SEQ ID NO.1 with mutation rate not larger than 5% or part of SEQ ID NO.1. Specificity is high, the method is simple, and the characteristic nucleotide sequence, primer, kit and method have great significance in commercialization and utilization of Flammulina fennae.

The invention relates to the field of meat processing and fresh-keeping, and discloses a preparation method of a fresh conditioned chicken product and a natural water-retaining preservative thereof. The natural water-retaining preservative is prepared by mixing the following components in parts by weight: 10-30 parts of edible gum, 30-60 parts of modified starch, 0.5-5 parts of tea polyphenol, 2-15 parts of black pine needle extract and 10-25 parts of trichosanthes kirilowii maxim extract. Compared with the prior art, the natural water-retaining preservative disclosed by the invention is compounded by preferably selecting several natural water-retaining agents and preservatives, so that the natural water-retaining preservative not only can effectively inhibit juice loss and lipid oxidationof fresh conditioned meat products, but also can effectively inhibit the growth of microorganisms under the storage condition of 4 + / -1 DEG C, thereby further prolonging the shelf life of the products; and the defect that the shelf life of fresh conditioned chicken products is short is overcome.

The invention discloses a preservative for iced fresh chicken and a preservation method. The preservative is prepared from an aqueous solution of perilla leaf extract and white poplar leaf extract, wherein the mass fraction m / m of the perilla leaf extract in the preservative is 3-5%, and the mass fraction m / m of the white poplar leaf extract in the preservative is 2-4%; fresh chicken obtained after slaughtering and thorough washing is precooled, put into the preservative to be soaked, taken out, drained, subjected to vacuum packaging and subjected to cold storage at 0-4 DEG C. The preservative can be repeatedly used, the storage time of the iced fresh chicken after preservative treatment is remarkably prolonged, and the shelf life reaches 18 days.

The invention provides a method for processing longan through vacuum freeze drying. The method includes the steps that firstly, fresh longan is cleaned and then denucleated and peeled, and longan pulp is subjected to color protection for 3-7 min in color fixative, then washed with clear water, drained, and then subjected to pre-freezing, vacuum freeze drying and nitrogen inflating packaging, where the color fixative is a water solution blended from tea polyphenol and cysteine, the mass percent concentration of tea polyphenol ranges from 1.0% to 1.5%, and the mass percent concentration of cysteine is 0.06-0.20 time that of tea polyphenol. Nutritional ingredients and active substances of the longan can be reserved in obtained dried longan, the taste is crispy, the flavor is rich and special, and eating is convenient.

The invention relates to the field of marine natural medicines, in particular to application of an organic solvent extract of ligia exotica to preparation of analgesic and anti-inflammatory medicines,or analgesic and anti-inflammatory medicine compositions, or health-care products with analgesic and anti-inflammatory functions, or functional foods with analgesic and anti-inflammatory functions. Fresh bodies or dry bodies of ligia exotica are extracted by an organic solvent after being crushed, and then subjected to vacuum concentration to obtain an organic solvent extract of the ligia exotica. In-vitro tests show that the organic solvent extract of the ligia exotica has remarkable epoxidase (COX-2) inhibition activity. Cell tests and animal tests prove that the ligia exotica extract has astrong inhibition effect on nitric oxide (NO) secreted by macrophages RAW264.7, has a remarkable analgesic effect on experimental mice, and is free of acute toxicity and high in safety. Therefore, the organic solvent extract of the ligia exotica provided by the invention has the potential of being developed into the analgesic and anti-inflammatory medicines or medicine compositions, the health-care products and the functional foods.

The invention discloses a rapid processing method of moringa oleifera leaf tea. The rapid processing method of the moringa oleifera leaf tea comprises the following steps: A, sorting, carrying out fixation, adding enzyme and rolling, namely pruning and sorting fresh moringa oleifera; selecting fresh moringa oleifera leaves, and carrying out microwave fixation; spraying compound enzyme solution of 0.1-0.2% of tannase and 0.2-0.3% of celluloase into the moringa oleifera leaves after fixation is finished, blending and standing, putting on a rolling machine, and rolling; B, carrying out far infrared drying; C, screening and smashing, namely sorting dry moringa oleifera leaves, selecting the moringa oleifera leaves emerald green in colour, putting into a smashing machine, and smashing, so that moringa oleifera particles are obtained; and D, packaging. The rapid processing method disclosed by the invention is reasonable in design, the equipment used is simple, operation is easy, and the obtained moringa oleifera leaf tea reserves nutrients and flavonol active ingredients of the moringa oleifera leaves, and is full of nutrients, and tea soup is golden yellow and not astringent, has no green taste and can be easily absorbed and conveniently eaten.

The invention discloses an application of lomitapide in preparation of antitumor drugs, and belongs to the technical field of biological medicine. Belongs to the technical field of biological medicine. The lomitapide can be applied to the antitumor drugs. The lomitapide is an FDA approved clinical medicine, and is high in safety, good in development and utilization prospect, small in toxic and side effects and low in price. The invention provides the application of lomitapide in the preparation of the antitumor drugs, and the lomitapide can be dissolved in water and orally taken for adjuvant therapy of colon cancer. In-vitro and in-vivo experiments show that the lomitapide can inhibit growth of intestinal cancer. The invention provides new application of the lomitapide, and provides a new drug source for adjuvant therapy of cancers.

The invention discloses a method for processing longan-flavored brandy by complex fermentation. The method comprises the following steps: A, removing cores of longans and peeling the longans after being cleaned, then blanching the longans for 1-3min in 90-DEG C hot water; B, putting blanched longan pulp in a juice extractor, adding distilled water in a material-liquid ratio of 1g: 4mL to be pulped and crushed, filtering to obtain clear longan juice, and collecting filter residues to obtain longan pomace; C, adding longan polysaccharide in the longan juice and carrying out sterilization, inoculating yeasts to be fermented to obtain longan wine I; D, adding the longan juice in the longan pomace, and adding the longan polysaccharide, inoculating the yeasts to be fermented and filtering to obtain longan wine II; E, combining the longan wine I and the longan wine II, adding honey and dahurian rose petals, and carrying out sealed storage; F, filtering fermented and aged slurry and removing residues of the slurry, distilling a filtrate to obtain the complex longan-flavored brandy. The complex longan-flavored brandy is rich in nutrition, unique in flavor and delicate in taste and well keeps nutrition and health effects of the longans and dahurian rose flowers, thereby having better prospects of development and utilization.

The invention discloses nutritional meat powder and a preparation method thereof, and belongs to the technical field of food and food making and processing. The nutritional meat powder is made from fresh meat, salt, monosodium glutamate, chicken powder, anise, fennel, chillies, Chinese prickly ash, cinnamon, herbs of rose pelargonium, rock candy, soy sauce, cooking wine, old ginger, red peppers, garlic, cloves, cardamom, peppers, fructus piperis longi, fructus amomi rotundus, beautiful galangal fruits, fructus schizandrae, beehives, radix linderae, radix astragali, rhizoma chuanxiong, fructuslycii, herba menthae, lemon leaves, walnut powder, sesame powder, starch, vitamins, mulberry powder, tea polyphenols and ginseng extracts. The preparation method of the nutritional meat powder comprises the steps of slicing, blending, high temperature steam flash-explosion, CO2 supercritical drying and ball milling packaging. Accordingly, flash explosion is conducted firstly to form a porous structure, and CO2 is used for supercritical drying, and nutritional ingredients of raw materials are maintained conveniently.

The invention discloses a healthcare honey which comprises the following raw materials in parts by mass: 60-100 parts of honey, 1-3 parts of albumin, 1-3 parts of globulin, 1-4 parts of vitamin B1, 1-3 parts of vitamin B2, 1-5 parts of vitamin B3, 1-4 parts of vitamin B6, 1-8 parts of vitamin B12, 0.5-2 parts of citric acid, 1-4 parts of folic acid and 1-5 parts of inositol. The healthcare honey has richer and more comprehensive nutritional and healthcare effects; through mutual compatibility of the raw materials, the taurine and inositol supplement amino acids and vitamins, and the B vitamins make up for the defect of relatively low vitamin content in honey; the pollen prepared by the technology has a high sporoderm-broken ratio, the content of active ingredients is greatly increased, and the slightly astringent mouthfeel before enzymolysis is improved to the natural freshness and low-degree sweetness of plant; and after the pollen enzymolysis, the allergen is destroyed by hydrolysis, and the biosafety of the product is enhanced.

The invention discloses a method for preparing white carbon black from diatomite in situ, and belongs to the field of chemical industry. The ore is not required to be purified according to the method. The method comprises the following steps of: (a) preparing sodium silicate glass liquid, namely grinding the diatomite, adding sodium hydroxide and water, stirring, boiling for reaction, cooling, ageing, and filtering to obtain the sodium silicate glass liquid; (b) preparing white carbon black mixed liquid, namely adding a small amount of sodium sulfate into the sodium silicate glass liquid, mixing, stirring, and precipitating the sodium silicate glass liquid by using a sulfuric acid solution to obtain the white carbon black mixed liquid; and (c) preparing the white carbon black, namely heating the white carbon black mixed liquid for ageing, washing, filtering, and drying to obtain the white carbon black. The white carbon black is directly prepared from the diatomite, silicon dioxide is separated from impurities through alkaline thermal reaction, the ore is not required to be further purified, and the process is simple.

The invention discloses application of daurisoline in the preparation of drugs to prevent and treat lung cancer. In-vitro and in-vivo experiments show that daurisoline can inhibit the growth and proliferation of lung cancer; daurisoline is a medicinal and edible natural product and natural autophagy retardant, having little toxic and side effect, good safety and low price; therefore, daurisoline can be dissolved in water for oral administration to treat lung cancer; daurisoline has a good development and utilization prospect, and a novel drug choice can be provided for the clinical treatment of lung cancer.

The invention belongs to the technical field of medicines, and particularly relates to an application of erodium brachyphyllum element in preparation of a Rab5 protein inhibitor, which proves that the erodium brachyphyllum element and Rab5 can generate interaction by utilizing a plurality of instruments and methods such as fluorescence titration experiment, isothermal titration calorimeter, circular dichroism chromatograph and the like; according to the invention, the molecular docking condition of the erodium brachyphyllum element and the Rab5 protein is also simulated, and a potential interaction site is obtained. Based on the discovery of the action site of the Erodium stephanianum willd as the Rab5 protein, the Erodium stephanianum willd can be used for synthesis of compounds with similar structures and research of drugs, can also be used for screening compounds capable of acting on the action site, and provides a new thought for design of anti-tumor drugs; according to the discovery that the erodium brachyphyllum element can be used as an inhibitor of Rab5 protein, the effect of inhibiting occurrence and development of tumors can be achieved, and the discovery of the invention has a good treatment prospect in screening of Rab5 protein related diseases and related drugs.

The invention discloses a preparation method for processing original-flavor Vaccinium Spp and Moringa oleifera Lam. powders by a vacuum freezing technology. The preparation method comprises the following steps of: S(1) color protection: putting cleaned and drained Moringa oleifera Lam. in a color protection liquid to conduct the color protection; S(2) Moringa oleifera Lam. pungency removal: carrying out cascade heating and cooling on the cleaned and drained Moringa oleifera Lam. in a far infrared heating box; S(3) vacuum freezing: during pre-freezing, putting the drained Vaccinium Spp and Moringa oleifera Lam. in a disk at a ratio of 70% and 30%, carrying out pre-freezing, and after the pre-freezing is finished, putting a sample in a freeze dryer to be subjected to vacuum drying; and S(4)drying and blending: carrying out superfine grinding on the Vaccinium Spp and Moringa oleifera Lam. subjected to the freezing processing, sterilizing and storing after blending. The original-flavor Vaccinium Spp and Moringa oleifera Lam. powder prepared by the preparation method has a harmonious Vaccinium Spp and Moringa oleifera Lam. flavor and nutrient quality, the nutrient ingredients of the Vaccinium Spp and the Moringa oleifera Lam. can be favorably kept, and a whole manufacture process is simple.

The invention discloses application of benzethonium chloride in the preparation of drugs to prevent and treat lung cancer. In-vitro and in-vivo experiments show that benzethonium chloride can inhibitthe growth and proliferation of lung cancer; since benzethonium chloride has little side effect, high safety and low price, benzethonium chloride may act a drug to treat lung cancer. In addition, it is also discovered herein that the joint use of benzethonium chloride and gefitinib can inhibit the growth of lung cancer cells more significantly than the sole use of gefitinib; it is indicated that the addition of benzethonium chloride can improve the sensitivity of lung cancer cells to gefitinib. Therefore, benzethonium chloride can be used as a gefitinib sensitizer, and alternatively, the combination of benzethonium chloride and gefitinib is applied to the treatment of lung cancer.

The invention discloses an application of imperatorin in preparing a medicine for inhibiting esophageal carcinoma. According to the invention, functions of the imperatorin, as a conventional Chinese herbal medicine, are explored, discovering that the imperatorin can obviously inhibit the secretion and expression of esophageal carcinoma cell protein TGF-[beta]2, and a scheme is designed; and it isverified that the imperatorin can inhibit metastasis of esophageal carcinoma cells, indicating that the imperatorin has a function of treating the esophageal carcinoma.

The invention relates to the field of medical technology, more particularly to a new use of coumarin compound murrayone in the preparation of antineoplastic drugs. As expressed by in vivo and in vitro experiments, the murrayone has inhibition effect on both the growth of tumor cells and the growth of subcutaneous transplantable tumor of animals, and the experiment for the acute toxicity of animals shows that the acute toxicity of the murrayone is quite low, therefore, the invention can be used for preparing the antineoplastic drugs.

The invention provides the application of crizotinib in the preparation of anti-Gram-positive bacterial drugs, and proposes for the first time that the anti-tumor drug crizotinib can effectively inhibit Gram-positive bacteria, especially can significantly inhibit single drug-resistant strains and The growth of clinical multidrug-resistant strains has a broad antibacterial spectrum, which expands the application range of crizotinib and has the potential to be developed into an antibacterial drug. Crizotinib has been approved for marketing by the drug regulatory authorities of many countries around the world. Its pharmacological safety is more reliable, and it does not need to carry out experiments such as toxicology. It has a good prospect for development and utilization. The treatment of positive bacterial infections (especially drug-resistant bacterial infections) has important practical significance, and provides a new drug option for the clinical treatment of Gram-positive bacterial infections.

The invention discloses Cordyceps guangdongensis medicinal liquor capable of reducing uric acid as well as a brewing method and an application thereof, and belongs to the technical field of traditional Chinese medicines. According to the present invention, Cordyceps guangdongensis is adopted as the raw material, and the Cordyceps guangdongensis medicinal liquor with the uric acid reducing effect is provided, and is prepared from 15 parts by weight of Cordyceps guangdongensis sporocarp powder, 3 parts by weight of pilose antler blood powder and 1500 parts by weight of Baijiu. The brewing method putting the cordyceps guangdongensis sporocarp powder and the pilose antler blood powder into a disinfected container, adding the white spirit, sealing the container, and storing for one month for taking. The animal experiment results show that the uric acid reducing effect of the product is close to that of a clinical medicine allopurinol tablet. The medicinal liquor raw material formula has good development and utilization prospects.

The invention discloses a method for refined purifying diatomite from diatomaceous clay in Miyi County of Sichuan Province. According to the present invention, diatomaceous clay in Miyi County of Sichuan Province is adopted as a raw material. The method comprises: adding a dispersant; carrying out hydraulic classification and ultrasonic cleaning to prepare a diatomite concentrate containing more than 80% by mass of SiO2; further carrying out low temperature calcination at a temperature of 650-700 DEG C; carrying out a acidification to prepare a refined diatomite concentrate containing more than 90% by mass of the SiO2. Because diatom of the diatomaceous clay in Miyi County of Sichuan Province is small, and adhering clay particles are weeny (average particle diameter is about 2 [mu]m), thediatom and the adhering clay thereof can be effectively separated through crushing, activating dispersant processing, ultrasonic water processing, calcining and acidifying. With the present invention, the mass percentage of the SiO2 of the diatomite is improved; impurity content is reduced; pollution-free technology requirement is reached; and resources rational utilization is guaranteed.