65results about How to "Increase leaching rate" patented technology

The invention relates to a method of preparing high pure copper from the leachate of primary sulfide ore bacteria, including: it leaches the primary sulfide ores and its mixture by using the mixture of middle and mesophilic bacterias. It filters and extracts the bacterial leaching solution, and conducts thin-layer wash-condensate, coalescence phase, and back-extraction electrowinning for the organic phase load. The invention uses hybrid strains of bacteria and sub-culture techniques to enhance the synergy of the bacterial leaching role and the minerals leaching rate, uses gelatin and other additives without sulfur element to reduce the sulfur impurities.

The invention discloses an auxiliary leaching agent applied to the ion-absorbed rare earth ore leaching process and an ore leaching method of the auxiliary leaching agent. The auxiliary leaching agent is a water-soluble surface active agent. Ore leaching liquid prepared through mixing of a leaching agent and the auxiliary leaching agent is used for leaching ion-absorbed rare earth ore, stable rare earth complex can be formed, moistening of the surface of soil is facilitated, and the leaching effect is strengthened. Meanwhile, due to the adding of the auxiliary leaching agent in the ore leaching liquid, clay hydration expansion and particle transferring can be effectively inhibited, and the effect of soil expansion preventing is achieved. The auxiliary leaching agent is used in the ion-absorbed rare earth ore leaching process, the rare earth leaching rate is increased, the use amount of the leaching agent is reduced, production cost is reduced, and ammonia nitrogen pollution is reduced; and in addition, the function of preventing soil expansion is achieved, and the probability of landslides is reduced.

The invention provides a purification method of high purity quartz sand tailings. The method includes: ore grinding: taking the tailings generated in the high purity quartz sand production process asthe raw material, and carrying out ball milling and sieving; strong magnetic separation: performing strong magnetic separation by a magnetic separator to remove strong magnetic substances in the quartz sand; acid leaching: performing acid leaching treatment, then conducting filtering and ultrapure water flushing; calcination: conducting high temperature calcination for 2-4h; water quenching: performing water quenching for 3-5min to break the junction of a quartz matrix and impurities; secondary acid leaching: repeating the above acid leaching process to remove feldspar and other impurities inthe quartz sand; and cleaning: conducting flushing with ultrapure water, and performing filtering and drying to obtain a purified and processed product of quartz sand tailings. The method provided bythe invention adopts mixed acid to cooperate a leaching aid to replace the traditional acid leaching process, improves the leaching rate of quartz sand, and reduces the dosage of acid in the acid leaching process. The quartz sand tailings treated by the technology have a silica content up to 99.9% or above, which reaches the standard of high-purity quartz sand.

The invention discloses a method for preparing chromium salt. The method is characterized by comprising the following steps: sufficiently and uniformly mixing a raw material containing chromium oxide (chrome ore or chromium slag) with sodium carbonate, carrying out oxidizing roasting at the roasting temperature of 900-1100 DEG C for 0.5-2.5 hours in an atmosphere with the oxygen content of higher than 20% by using microwaves as a heat source, leaching the roasted product with water, and preparing chromium salt from the leach solution. The chemical analysis on the clinker and leaching slag indicates that the insoluble waste slag contains less than 5% of chromium (on the basis of chromic oxide). The method reduces the chromium content in the discharged chromium slag, enhances the chromium utilization ratio in the chromium salt production process, effectively saves the chrome ore resources, and has obvious advantages of resource saving and environmental protection by using the microwaves as the heat source instead of the traditional coal and natural gas heating.

The invention relates to a production method of capsule tea, and belongs to the field of tea processing technology. The method comprises the following steps: (1) classifying fresh tea leaves, removing non-tea impurities, stalling to green and withering; (2) processing the fresh tea leaves by low-temperature freezing and puffing or freezing-thawing microwave fragmentation; (3) then processing the tea leaves by high-temperature gas heating treatment or microwave fixation, rolling and cutting to obtain fixed rolling-cutting leaves; (4) squeezing 10% to 15% of the fixed rolling-cutting leaves to obtain tea juice; (5) drying the rest of the fixed rolling-cutting leaves primarily, embedding the dried leaves with the atomized tea juice obtained in step (4), drying secondarily, and far infrared heating to improve aroma; (6) alternatively blending with herbaceous plants, and carrying out far infrared heating to improve aroma; (7) packaging the products obtained by step (5) or (6) with plastic capsules to obtain capsule tea. The capsule tea produced by the invention is more stable in quality, convenient, healthy and professional, and adapts to the rhythm of modern life.

The invention discloses a resource utilization method for catalytic oxidation leaching of molybdenum and nickel from molybdenum-nickel ore. By the method, the production efficiency is improved and the production cost is reduced. The resource utilization method comprises the following steps: A) crushing and grinding the molybdenum-nickel ore to obtain molybdenum-nickel ore powder with the granularity of 100-300 meshes; B) preparing a leaching solution by using nitrate, acid and water in a ratio; C) adding the molybdenum-nickel ore powder obtained in the step A), a catalyst and the leaching solution obtained in the step B) into a reaction kettle, and performing leaching reaction to obtain leachate; and D) filtering the leachate, separating acid and salt from the filtrate by using a membraneseparation method or an ion exchange method, recycling an acid solution, adjusting the pH value of a salt-containing separated solution, and precipitating to obtain a molybdenum compound and a nickelcompound.

The invention relates to a method for recycling ferric sulphide-containing tailings. According to the method, oxidizing half-reaction FeS2+8H2O -> Fe<3+>+16H<+>+2SO4<2->+15e<-> and reducing half-reaction 3.75O2+15H<+>+15e<-> -> 7.5H2O (3) are respectively put into an anode chamber and a cathode chamber of a microbial fuel cell (MFC) for microbial leaching, so as to obtain ferric sulphide-containing tailings; and when metal is recovered, electrons released by oxidizing half-reaction can also be recovered by an outer circuit of the MFC in a form of electric energy, so that the operation cost is reduced. In addition, protons generated by oxidizing half-reaction are transmitted to a cathode to participate into reduction reaction to generate water, and are continuously consumed, so that the leaching rate can be significantly improved to improve the metal recovery rate; meanwhile, the generated water is environment-friendly and free of secondary pollution; and corrosion to equipment caused by acid production can also be retarded.

The invention provides a clean gold extraction device and method. The clean gold extraction device comprises a chemical adding system, a reaction tank, a solid-liquid separation system, a micro nanobubble generation device and a gold adsorption system. According to the device and method, gold extraction is carried out by using micro nanobubbles as an oxidizing agent source, and a large number of hydroxyl radicals can be generated through excitation. The hydroxyl radicals have the strong oxidizing property, so that the leaching rate of mineral powder is greatly increased. Moreover, the mass transfer efficiency of reactions is greatly improved because of particularly small bubbles. An amino acid gold extraction agent which is non-toxic to the environment is also adopted. The amino acid gold extraction agent is environmentally friendly and non-toxic. Waste water can be discharged through simple treatment. Leaching and adsorption can be conducted simultaneously. The production efficiency is improved. By adopting the clean gold extraction device and the gold extraction method adopting the cyanide-free amino acid gold extraction agent and modified PAN adsorption films, the leaching rate of gold ores easy to leach can be made greater than 90%, and the leaching rate of non-pretreated gold ores hard to leach is made to greater than 85%.

The invention discloses a mechanical activating and strengthening cobalt white alloy cobalt leaching technology. In the technology, a fluidized-bed jet mill is used for preparing activated white alloy material, and the fluidized-bed jet mill is a device for crushing the white alloy by means of high-speed jet. A planetary ball milling process is replaced by the method, and the fluidized-bed jet mill is a continuous feeding and discharging device. During the crushing process, nature-based white alloy is used, and no water is needed. The mechanically activated mineral aggregate is placed in a reactive tank, and a leaching agent, namely sulfuric acid, is added for leaching, wherein concentration is 1.0-4.0mol / L, the weight ratio of liquid phase to solid phase is 8:1, the stirring speed is 150r / min, blast capacity is 40L / min for 1kg of mineral aggregate, temperature is 40-100 degrees centigrade, and leaching time is 2-12; and finally, the cobalt-containing lixivium is obtained. By mechanical activating, scale production of cobalt white alloy in industry is implemented, in a single sulfuric acid system, production effects of low cost and high leaching rate are reached, and the leaching rate of cobalt is up to 96.1%. However, the non-activated cobalt white alloy in the single sulfuric acid system cannot be produced industrially, and the cobalt leaching rate is only 63.2%.

The invention relates to a method for leaching metallic copper in copper pyrites by using amino acid reinforced microorganisms. The method for leaching metallic copper in copper pyrites by using microorganisms is implemented as follows: microorganisms are adsorbed on the surface of copper pyrites to act with the copper pyrites, so that metallic copper ions in crystal lattices of the copper pyrites enter a solution; meanwhile, metabolites produced by the microorganisms have a chemical reaction with the copper pyrites, so that metallic copper in the copper pyrites is dissolved out; aminothiopropionic acid with concentration of 5*10<-3>-5*10<-4> mol / L is added in the process of leaching metallic copper in the copper pyrites by using the microorganisms. Compared with the prior art, in the process of leaching metallic copper in copper pyrites by using microorganisms, aminothiopropionic acid with certain concentration is added so as to improve the biological leaching efficiency of the copper pyrites; the method disclosed by the invention is simple in operation, and added aminothiopropionic acid is easily obtained and is non-toxic and harmless, therefore, the method for improving the microorganism leaching speed of the copper pyrites by using aminothiopropionic acid is simple and easy, and is applicable to the microorganism leaching processes of various copper pyrites.

The invention provides a cyanide-free extractant and a gold extracting method. The cyanide-free extractant comprises, by mass percentage, 0.5-2% of amino acid and 0.2-2% of alkali, wherein water serves as a solvent. According to the gold extracting method, the amino acid gold extracting agent free of toxicity to the environment is adopted for leaching of gold, the method is environmentally-friendly, free of toxin, short in leaching time and high in leaching rate, and waste water can be drained after being simply treated. According to the cyanide-free extractant and the gold extracting method, the leaching rate of gold ore easy to leach is high, is larger than 90% and can reach 95%; for traditional gold ore difficult to leach, such as ore which is not pretreated and contains pyrite cyanide arsenopyrite, the leaching rate is high as well and is larger than 85%, and the leaching rate is less than 30% compared with the leaching rate of a traditional cyaniding process of the same type of ore which is not pretreated, so that by the adoption of the cyanide-free extractant and the gold extracting method, the leaching rate of the gold ore difficult to leach can be increased greatly.

The invention discloses a method for extracting oat oil through microwave pretreatment. The method comprises the following steps: cleaning oat raw materials, draining the cleaned oat, and drying the oat in a drying oven; hulling the oat in a huller, and separating oat bran; crushing the oat bran in a crusher; and extracting the oat oil from the crushed oat bran, and performing microwave treatment after the oat is dried and before the dried oat is hulled in the huller, wherein the microwave treatment method comprises the following step of: putting the dried oat particles into a microwave dryer, wherein the power is regulated to be 180-900W, the treatment time is 60-150 seconds, the drying temperature in the drying step is 60 DEG C, and the moisture content of the dried oat is 15wt%. The method provided by the invention is simple and reliable, convenient to operate, low in cost, high in speed and high in leaching efficiency and has a high economic value.

The invention discloses a method for recycling zinc from smelting waste residues. The method comprises the following steps: uniformly mixing the smelting waste residues with calcium hypochlorite, androasting at a high temperature to obtain a roasted product; uniformly mixing one coordination agent in citric acid or citrate with one coordination agent in tartaric acid or tartrate to obtain a coordination mixture, adding water, adding an ammonia water solution and ammonium sulfate after uniformly adding, uniformly mixing to form a coordination leaching agent; putting the obtained roasted product in the coordination leaching agent to subject to ultrasonic reaction to obtain a zinc leaching solution; adding zinc powder into the obtained leaching solution to react for certain time, then, filtering, and performing high-temperature roasting on the obtained filtrate to obtain zinc oxide. While a leaching rate of zinc in the smelting waste residues is guaranteed, impurity irons therein are prevented from leaching out; and the obtained zinc leaching solution can be roasted at a high temperature to directly obtain a high-purity zinc oxide product, so that zinc in the smelting waste residuesis conveniently recycled to apply in the industry.

The invention discloses a processing method of red tea raw materials for a drink, and belongs to the technical field of tea leaf processing methods. The processing method comprises the following steps: withering fresh leaves; rolling the withered leaves, and adding pectinase and edible sugar in the rolling process; fermenting the rolled leaves; drying the fermented leaves; spreading the dried leaves for cooling to the room temperature; rehydrating the spread and cooled leaves; re-drying the rehydrated leaves; uniformly stacking the obtained tea leaves, and packaging. By organic combination, assembly and improvement of a conventional process and a specific process, the processing method capable of remarkably improving the quality stability of the drink is provided for tea leaf producers, and the obtained tea drink is unlikely to generate precipitates and relatively good in flavor quality stability.

The invention provides a making method of raw tea for flavored tea beverages, which includes: selecting fresh tea leaves of specific varieties and tenderness; and subjecting the leaves to fixation, hot rolling, cell breaking, drying, fragrance extraction and the like to obtain raw tea. The traditional processes of fixation, rolling, drying and the like are improved and optimized, the cell breaking process is merged to the process flow, and accordingly tea processing cost is lowered, dissolution rate of components of tea leaves in the soaking process is increased, and the period of stable flavor quality of tea extract is prolonged. By organically combining, integrating and perfecting the traditional processes and the special processes, the tea material special for flavored tea beverages isprovided for tea beverage production enterprises.

The invention relates to the technical field of rose corolla processing, in particular to rose corolla drying and cell sap extraction equipment. The rose corolla drying and cell sap extraction equipment is used for improving the drying quality and drying efficiency of rose corolla. The rose corolla drying and cell sap extraction equipment is characterized by comprising a front vertical plate, an air deflector and a rear vertical plate. The crossing curve of the left side face of the air deflector in any horizontal section is an arch. The front vertical plate, the air deflector and the rear vertical plate are sequentially and fixedly connected. The portion, on the left side of the air deflector, of the area between the left vertical plate and the right vertical plate is in a U shape in any horizontal section. The rose corolla drying and cell sap extraction equipment has the beneficial effects that the drying efficiency can be improved, and the good quality of the rose corolla is ensured.

The invention relates to a wet process for treating lead copper matte, and belongs to the field of non-ferrous metal hydro-metallurgy. In the process, the lead copper matte is treated by a normal-pressure leaching wet process; and the lead copper matte is leached by sulfuric acid and sodium oxide, and oxygen is continuously introduced in the leaching process, wherein copper is leached, and the lead in forms of lead sulfate and lead chloride is retained in residue. After the leaching process is finished, liquid-solid separation is carried out and primary separation of metals is implemented; copper-containing leachate is reduced by scrap iron to form copper sponge, and solution after reduction serves as a raw material for recycling iron; and the leaching residue returns to a lead pyrometallurgy system, and valuable elements such as lead, silver, simple sulfur substance and the like are recycled. In the wet process, solution is not discharged, the environment is protected, and the wet process belongs to clean metallurgy; the process is simple and practicable, and is convenient to operate; and the cost is low and the comprehensive recoverability is high.

The invention discloses a method for extracting soybean oil by twice vacuum flash treatment and enzymolysis. First vacuum flash treatment is carried out on a soybean material after course crushing; the purpose of bursting cell walls is achieved under transient vacuum action and through the aid of the flash steam pressure generated by water in soybean embryonic cells, and fat is accumulated on thesurface layer after the wall bursting treatment. The porosity of the surface layer cells is increased, the leaching rate of grease and protein is improved, and the drying effect is achieved. Then soybean protein and soybean oil are effectively obtained by separation after the enzymolysis treatment, and the protein utilization rate of oil crops is improved. Secondary vacuum flash treatment is carried out on the obtained soybean oil; aldehyde and ketone substances, and free fatty acid generating peculiar smell in the soybean oil are rapidly removed; and meanwhile, the residual water is removed instantaneously. The obtained soybean oil has excellent quality, the loss of natural nutrient components in the soybean is low, the nutritional value is high, and the color reversion does not occur easily.

The invention relates to novel rhizoma polygonati wine and a production process thereof. The production process comprises the following steps: performing enzymolysis on traditional Chinese medicinal materials, performing diastatic fermentation, performing base liquor fermentation, adding edible alcohol for soaking, filtering, separating and the like. The wine provided by the invention takes the pure traditional Chinese medicinal materials with homology of medicine and food as raw materials and is safe and harmless to the human body; the wine meets the compatibility of the traditional Chinese medicinal materials, and has the effects of strengthening the spleen and stomach, reinforcing liver and kidney, nourishing yin and blood, regulating deficiency, calming the heart and tranquilizing themind and the like; by virtue of steps of filtration, beta-cyclodextrin debitterization and the like, bitterness is removed, and the taste is optimized. The innovation point is that by utilizing a manner of directly fermenting after performing enzymolysis on the traditional Chinese medicinal materials, the active ingredients in the medicinal materials are efficiently and fully released. Compared with the traditional health medicinal liquor, the novel rhizoma polygonati wine disclosed by the invention has the advantages that the production cycle is greatly shortened, the ingredients of the traditional Chinese medicinal materials are fully utilized, and the losses of nutritional ingredients are greatly reduced.

The invention relates to novel polygonatum sibiricum health-care wine and a brewing method thereof. The brewing method comprises the following preparation methods and steps of fermenting traditional Chinese medicine raw materials, adding edible alcohol for soaking, performing filtering separation and the like. According to the health-care wine, pure traditional Chinese medicines being medicinal and edible are used as the raw materials, and are safe and harmless. The novel polygonatum sibiricum health-care wine conforms to efficacy of traditional Chinese medicine and pharmacy materials, and hasthe efficacy of invigorating the spleen and the stomach, tonifying the liver and kidney, nourishing yin and blood, regulating consumptive disease, quieting the heart, soothing the nerves and the like. Through repeated experiments, the content is optimized and adjusted to be reasonable, and the novel polygonatum sibiricum health-care wine is appropriate in taste. Creatively, medicinal materials are directly fermented, so that effective components are efficiently and sufficiently released. Compared with conventional health-care medicinal wine, the production cycle is greatly shortened. The traditional Chinese medicine components are sufficiently used, and the loss of nutrient components is greatly reduced.

The invention discloses fructus lycii and rhizoma polygonati health-care wine and a preparation method thereof, and relates to the technical field of health-care wine. The health-care wine is preparedfrom the following raw materials in parts by weight: 30-50 parts of rhizoma polygonati, 20-30 parts of fructus lycii, 5-10 parts of longan aril, 10-20 parts of fructus rubi , 3-8 parts of semen cassiae, 10-16 parts of clove, 25-35 parts of distilled liquor, 4-8 parts of fructus mori, 15-20 parts of eucommia ulmoides, 10-20 parts of Chinese dates, 6-10 parts of poria cocos, 1-5 parts of apricot kernels, 6-10 parts of cortex cinnamomi, 1-6 parts of radix polygoni multiflori, 15-20 parts of sesame and 1-5 parts of radix astragali. According to the prepared health-care wine, the rhizoma polygonati is used as a main raw material, the fructus lycii, the Chinese dates, the poria cocos, the apricot kernels, the cortex cinnamomi and the radix polygoni multiflori are added at the same time, and through the synergistic effect of all the components and the rhizoma polygonati, the product has the effects of strengthening the spleen and stomach, tonifying the liver and kidney, nourishing yin blood,regulating asthenic disease, calming the heart, soothing the nerves and the like; and the rhizoma polygonati, the fructus lycii and other traditional Chinese medicine raw materials are crushed, fermented and then soaked, so that the leaching rate of the rhizoma polygonati and other effective components is increased.

The improved method for extracting melingmycin from Nanchang streptomycete fermented liquor is mainly formed from the following steps: pretreatment process of fermented liquor, liquid-solid separation process, extracting melingmycin from residual filtrate and recovering process, pretreatment process of filter cake (mycelium), further solvent leaching of mycelium and concentration process of leaching liquor and one-step extraction process of concentrated leaching liquor. The total recovery rate of melingmycin can be up to above 85%.

The invention relates to a production method of capsule tea, and belongs to the field of tea processing technology. The method comprises the following steps: (1) classifying fresh tea leaves, removing non-tea impurities, stalling to green and withering; (2) processing the fresh tea leaves by low-temperature freezing and puffing or freezing-thawing microwave fragmentation; (3) then processing the tea leaves by high-temperature gas heating treatment or microwave fixation, rolling and cutting to obtain fixed rolling-cutting leaves; (4) squeezing 10% to 15% of the fixed rolling-cutting leaves to obtain tea juice; (5) drying the rest of the fixed rolling-cutting leaves primarily, embedding the dried leaves with the atomized tea juice obtained in step (4), drying secondarily, and far infrared heating to improve aroma; (6) alternatively blending with herbaceous plants, and carrying out far infrared heating to improve aroma; (7) packaging the products obtained by step (5) or (6) with plastic capsules to obtain capsule tea. The capsule tea produced by the invention is more stable in quality, convenient, healthy and professional, and adapts to the rhythm of modern life.

The invention relates to a secondary copper sulfide treatment method. The method includes the steps that ore is re-graded according to the content of clay; after waste rock is classified according tochemical components, the ore adopts different treatment methods and uses different equipment to realize classification and heaping in a heap leaching field; and the waste rock is discharged in a designated soil discharge area according to classification requirements. Different leaching process means are adopted according to different leaching periods of the ore in the heap leaching field, and thefinal leaching rate of copper is improved. An acid mist collecting device is added to change the working environment of a groove surface, so that the body health of employees is protected, finished cathode copper is finally produced, and economic benefits are brought to enterprises.

The invention provides a method for using nanobubbles to leach valuable metals from batteries, comprising: using a leaching agent to leach battery materials, wherein heating and stirring are carried out during the leaching process, and the leaching agent contains inorganic acid, A reducing agent and a liquid mixed with nanobubbles; wherein the diameter of the nanobubbles is no more than 1000nm; the Zeta potential of the liquid mixed with nanobubbles is no more than -30mV; the zeta potential of the leaching agent is no more than -20mV; The concentration of the inorganic acid is 0.2-4 mol / L; the concentration of the reducing agent is 0.2-2 mol / L. Compared with the traditional acid leaching method, the leaching efficiency of the present invention is high, and the leaching capacity is large. The traditional acid leaching method needs several hours to achieve a leaching rate of more than 95%, while the present invention can greatly improve the leaching efficiency . The invention can avoid the use of inorganic reducing agent, and reduces the damage of the solvent to the environment and the influence on the human body after leaching.

A process for producing high-quality sodium silicate using ferrosilicon ore, comprising the following steps: 1) making reduced materials: making ferrosilicon ore into pellets to be sintered; 2) reducing pellets to be sintered: heating pellets to be sintered at high temperature 3) High-silicon tailings are selected by crushing and milling: crushing and reducing the pellets to obtain reduced crushed materials, using an ultra-fine milling device to grind the reduced crushed materials to obtain reduced powder, and magnetically separating the reduced powder to obtain high-silicon Tailings; 4) Extraction of sodium silicate solution: adding lye to the high-silicon tailings to obtain a solid-liquid mixture, and leaching the sodium silicate solution. The technical proposal provided by the application can reduce the production cost of sodium silicate and improve the production quality of sodium silicate.

The invention discloses a method for extracting scutellaria baiculensis total flavonoid by graphene oxide-ethanol synergy, which is a method for extracting total flavonoid from scutellaria baiculensis drugs by using grapheme oxide serving as a catalyst and synergized with ethanol water solution. When scutellaria baiculensis total flavonoid is extracted by adopting the method, the yield of scutellaria baiculensis total flavonoid in the product is 20-25 percent, the content is 40-70 percent, wherein the yield of baicalein is 7-14 percent, and the content is 10-20 percent, so that the content of baicalein in the product is greatly increased while the yield of total flavonoid and content are increased. According to the method, the extraction rate of the total flavonoid can be 96 percent in primary extraction by the method, the drug is not needed to be extracted for multiple times, and the process is simple. Furthermore, the graphene oxide is adopted as a catalyst, the extraction process is green and environment-friendly, other separations are not needed after extraction, and the problems of high extraction temperature, low extraction rate, equipment corrosion, wastewater pollution and high production cost in the catalytic extraction process by using inorganic acid can be solved.

The invention discloses a method for separating valuable metals from a copper-cobalt alloy. The method comprises the following steps: (1) crushing and / or grinding the copper-cobalt alloy to obtain copper-cobalt alloy particles; (2) roasting the copper-cobalt alloy particles in an atmosphere containing hydrogen chloride gas to obtain a roasted product; and (3) leaching valuable metals in the roasted product by using an aqueous solution. According to the method, the copper-cobalt alloy is roasted in the hydrogen chloride atmosphere, so that impurity silicon in the alloy is volatilized in the form of SiCl4, the high-silicon copper-cobalt alloy can be effectively treated, and compared with a traditional acid leaching process for treating the copper-cobalt alloy with the high silicon content, silica gel which is not beneficial to follow-up separation cannot be generated.

The invention relates to a rapid leaching method for weathered crust strain amass-type rare earth ore in which seepage is difficult. The method comprises the following steps that firstly, water is directly injected into the rare earth ore in which seepage is difficult; secondly, a leaching agent solution is injected into the rare earth ore in which seepage is difficult, and the liquid level difference of water and the leaching agent solution is kept to range from 5 cm to 30 cm; and thirdly, rare earth leachate is collected, and rare earth is then extracted from the leachate. A new liquid injection technology is provided for the rare earth ore in which seepage is difficult, tap water is injected in the first step, then the leaching agent is injected, and the leaching cost is reduced; and compared with a traditional rare earth liquid injection technology, the leaching rare earth production period can be effectively shortened, the leaching rate of the rare earth leachate is increased by 2-8 times, and the rare earth extraction rate is increased and reaches 85%-98%.