47results about How to "Increase leaching" patented technology

The invention relates to a method for extracting high-purity steviol glycosides from stevia rebaudiana. The method comprises the following steps: (1) soaking a ground stevia rebaudiana raw material into water, and adding a cellulase preparation for enzymolysis; (2) carrying out heating extraction and centrifugation, and filtering, so as to obtain stevia rebaudiana enzyme extraction liquid; (3) carrying out water-bath heating on the stevia rebaudiana enzyme extraction liquid, adding an inorganic salt flocculating agent, stirring, flocculating, carrying out centrifugation, and filtering, so as to obtain stevia rebaudiana edulcorated liquid; (4) carrying out decolorization adsorption on the stevia rebaudiana edulcorated liquid by virtue of a macroporous adsorption resin column, carrying out elution through eluent, carrying out nanofiltration, and concentrating, so as to obtain a stevia rebaudiana concentrated liquid; and (5) carrying out silica-gel column chromatography and elution on the stevia rebaudiana concentrated liquid, collecting each fraction, concentrating, and drying, so as to obtain multiple high-purity steviol glycosides products. The purity of the products obtained by virtue of the method can reach up to 98.4%, and the final yield is more than 90%; the residual amounts of ethanol and ethyl ester are low, so that the method is environmentally friendly and safe; the method is simple in process, high in operability, low in energy consumption and cost and applicable to industrial production.

The invention discloses an extraction method of effective ingredients of winter jasmine. The method comprises the following steps: smashing leaves of thewinter jasmine into nanometer powder, degreasing, drying, processing degreased solid powder with a eutectic reagent by a microwave-ultrasonic technology and filtering, so as to obtain filtrate; finally, adding a certain amount of methanol into the filtrate for vortexcentrifugation, so that an upper phase of methanol is separated; evaporating a solvent, so as to obtain extracts of the effective ingredients of the winter jasmine. With adoption of the extraction method, the effective ingredients of the winter jasmine are extracted by adopting the eutectic reagent through combination of the microwave-ultrasonic technology, so that the leaching content of the effective ingredients can be remarkably improved, the extraction efficiency is improved, the using amount of the organic solvent can be reduced, and the method is environment-friendly. Additionally, according to the method disclosed by the invention, the extraction time can be shortened, and the cost is lowered. The extracts of the winter jasmine, which are obtained by the method, do not need to be purified subsequently and can be directly applied todaily chemicals such as toothpaste, a facial cleanser, body wash, shampoo, hand creamandthe like as a natural antibacterialpreservative.

The invention relates to a maca teabag and a preparation method thereof. The maca teabag is prepared from the raw materials of 10-15 parts of maca, 5-8 parts of raspberries, 3-6 parts of barley, 2-4 parts of osmanthus fragrans and 1-3 part(s) of Pu-Er ripe tea through the steps of raw material selecting, smashing, screening with a vibrating screen, weighting, component mixing and final subpackage. The maca teabag is reasonable in components and ratio design, and rich in nutrition, and the effects of all components are supplementary to one another; the preparation method is simple and convenient, and the cost is low; the maca teabag is prepared from natural components completely, so that original taste and flavour are kept, the tea soup of the maca teabag is brownish yellow, strong in wheat flavor and flower fragrance, and mellow in taste; the dissolution rate is high, extract is multiple, brewing resistance is achieved, maca teabag is carried and drunk conveniently by people, and a new beverage with the efficacities of tonifying kidney, building body and resisting fatigue is provided.

The invention discloses a method for producing electrolytic zinc, which comprises the following steps: (1) producing the electrolytic zinc from oxide material containing less than 20% of zinc serving as a raw material and by taking waste acid in a titanium white plant as a leaching agent, namely by using two wastes; (2) grinding the oxide material to obtain 80 to 100-mesh material and leaching zinc in the material by using the waste acid for about 3 to 4 h so as to obtain soluble zinc sulfate; (3) filtering and adding lime milk to regulate the pH value to 5.4 and hydrolyze impurities and rare metals in the solution to be separated out in the form of precipitate; (4) adding zinc powder into the solution without the impurities so that copper and cadmium in the solution perform replacement reaction to generate cooper and cadmium-containing precipitates which are commonly called 'copper and cadmium slag'; (5) separating the zinc from ferrous iron in the solution without cobalt, namely, hydrolyzing zinc sulfate in the solution by using lime milk as a precipitant to generate white zinc hydroxide precipitate; (6) filtering the zinc hydroxide precipitate, heating the obtained solution to about 70 DEG C and introducing air to oxidize the ferrous iron to ferric iron; and adding a proper amount of oxidant so as to oxidize the ferrous iron in the solution to the ferric iron and separate out the ferric iron in the form of precipitate, namely, removing iron by a 'goethite process'; (7) dissolving the precipitate by the electrolyzed solution and filtering, wherein the filter residue is used for preparing 'gypsum', the solution is subjected to impurity removal, evaporation, concentration and crystallization, the crystallization mother solution is returned to the leaching process, and the crystal is dissolved by water and used for preparing electrolyte; and (8) electrolyzing, stripping, melting and casting into a zinc ingot.

The invention relates to slow-release magnetized composite fertilizer for planting rapeseed and its preparation method. The slow-release magnetized compound fertilizer for planting rape includes the following raw materials in parts by weight: 24-28 parts of urea, 18-22 parts of potassium dihydrogen phosphate, 3 to 5 parts of calcium powder, 10 to 16 parts of potassium chloride, 2 to 2.5 parts of humic fertilizer, 0.2 to 0.5 part of selenium-rich fertilizer, 0.5 to 1 part of magnesium sulfate heptahydrate, 1 to 2 parts of starch ether, 4 to 8 parts of fertilizer additives, and 34 to 40 parts of magnetic carrier. The slow-release magnetized composite fertilizer for planting rapeseed is characterized in that the iron mineralized tailing sand compound fertilizer is magnetized, the soil environment is improved, the fertilization period of the fertilizer is enhanced, the nutrition absorption of the crop is enhanced, the lodging resistance and disease resistance of the rape are enhanced, yield and earnings are increased, and the environment is protected.

The invention relates to tea with functions of lowering blood pressure and clearing away heat and a processing method thereof, and belongs to the technical field of health protection tea. The tea is processed from dried honeysuckle flower and fresh folium cortex eucommiae. The processing method comprises the following steps of: feeding steam into a high pressure boiler with the fresh folium cortex eucommiae, keeping the pressure in the boiler at 1 amp for 1 to 2 minutes, and then quickly releasing the pressure; mixing the dried honeysuckle flower with enzymes deactivated and the folium cortex eucommiae, rubbing so that the dried honeysuckle flower and the folium cortex eucommiae are in contact with each other, and ventilating and drying for 24 to 48 hours; and putting the dried honeysuckle flower and the folium cortex eucommiae into a frying pan, frying at the temperature of 85 to 90 DEG C for 5 to 10 minutes, taking out, drying in the air and storing. After the dried honeysuckle flower and the heated folium cortex eucommiae are mixed and rubbed, effective substances are fully absorbed by the dried honeysuckle flower, so that diffusate can be prevented from being oxidized and deactivated in the air; and furthermore, effective components are fused, so that the taste is improved. The problems that the folium cortex eucommiae tea tastes bitter, and the honeysuckle flower tea tastes like grass are solved; and the tastiness is improved. When the tea is brewed, more effective components are leached out so as to achieve high functions of lowering blood pressure and clearing away heat.

The invention provides a method for preparation of ceramsites by using sludge and river sediment and harmlessness treatment and immobilization of heavy metals, which relates to a preparation method for constructional ceramsites. The invention aims to overcome the problems in treatment of sewage sludge and contaminated river sediment and immobilization of heavy metals. The method provided by the invention comprises the following steps: respectively crushing sewage sludge and river sediment after natural drying; mixing the crushed sewage sludge and the crushed river sediment according to a mass ratio of 3: 1-8 to obtain a mixture; adding a silicate substance and uniformly mixing the silicate substance with the mixture; placing an obtained product in a granulator for extrusion molding so as to obtain green bodies of the ceramsites; and subjecting the green bodies to natural air drying and sintering so as to obtain the constructional ceramsites. According to the invention, the immobilization rate of heavy metals exceeds 95%; the method of preparing the lightweight ceramsites by utilizing the sludge and the river sediment is simple, industrial production can be realized by using conventional equipment, so the method has a good application prospect.

The invention discloses a multi-section acid leaching, washing and pressure filtration metal extraction process. The multi-section acid leaching, washing and pressure filtration metal extraction process comprises the following steps of: pressurizing and injecting a metal acid leaching solution into a filter chamber of a diaphragm filter press to get a filter cake, and pre-pressing the filter cake at 0.2MPa-0.6MPa; performing two-section acid leaching on the filter cake by two-section acid under a pre-pressed state; continuously washing the filter cake subjected to acid leaching by a one-section washing solution under the pre-pressed state; introducing gas below 70 DEG C to one side of the washed filter cake for gas blowing under the pre-pressed state; introducing gas into a material inlet channel for back blowing under the pre-pressed state after the gas blowing is ended; and performing high-pressure pressure filtration on substances in the filter chamber after the back blowing is ended, and unloading slag. On the basis, the invention further discloses a device for the process. The process and the device are used for extracting metal compounds from ore in a wet electrolytic industry.

A red mud resource utilization method includes the steps: mixing red mud with diluted sulfuric acid solution with the concentration of 10-30% according to the weight ratio of 1:2-1:6, and stirring the mixture to slurry; adding, by mass, 5-65% of solution containing NO2<-1> or NO3<-1>, stirring the mixture in a reaction kettle and heating to 40-100 DEG C prior to leaching for 0.5-5 hours, wherein the weight ratio of the solution to the diluted sulfuric acid solution with the concentration of 10-30% is 0.1-1:100; filtering residues out to obtain filtrate, and analyzing the iron content in the filtrate; adding ferrous sulfate into the filtrate, increasing the temperature to 40-100 DEG C after stirring and dissolution, and feeding oxygen or compressed air for reaction for 1-10 hours, wherein the weight ratio of the ferrous sulfate to iron in the filtrate is 1-25:100; and ageing for 5-50 hours to obtain a silicon, iron and aluminum ternary composite water purifying agent finished product. Leaching amount of the silicon, the iron and the aluminum in the red mud can be increased by performing acid leaching for the red mud by the aid of the diluted sulfuric acid solution and the solution containing the NO2<-1> or the NO3<-1>. Besides, the added ferrous sulfate solution and the solution containing the NO2<-1> or the NO3<-1> are capable of promoting polymerization of the silicon, the iron and the aluminum in leaching liquor, and an obtained ternary composite water purifying agent is good in water purification performance.

Disclosed herein is a method for preparing a ceramic waste form containing radioactive rare-earth and transuranic oxide, and the ceramic waste form with enhanced density, heat-stability, and leach resistance prepared by the same.

A slow-release magnetized compound fertilizer specially used for wheat and a preparation method of same. The fertilizer is prepared from, by weight, 20-30 parts of urea, 4-10 parts of calcium superphosphate, 12-18 parts of potassium chloride, 3-5 parts of a humic fertilizer, 0.5-1 part of ammonium molybdate, 0.5-1 part of manganese sulfate, 2-3 parts of plant ash, 6-10 parts of a fertilizer additive, and 32-40 parts of a magnetic carrier. Iron-beneficiating tailing sand is compounded with the fertilizer to perform magnetizing treatment, so that the fertilizer can increase productivity and yield, improves soil environment, can retain nutrients and prevent nutrient loss, is greatly improved in utilization rate, comprehensively utilizes resources, is low in emission of water liquid, waste solid and waste gas, and has good environmental benefit.

The invention relates to a method for extracting total alkaloid in stem bark and leaves of nauclea offcinalis, which comprises the steps of (1) performing filtering extraction by utilizing acid water solution of alcohol, (2) preparing total alkaloid concentrated liquid, (3) preparing total alkaloid dry powder or dry extraction, and (4) measuring total alkaloid content. The method for extracting the total alkaloid in the stem bark and the leaves of the nauclea offcinalis has the advantages of (1) reducing extraction temperature and concentration temperature, reducing heated time of the extraction, saving energy consumption, improving leaching efficiency, leaching ratio and leaching amount of active components of the alkaloid, avoiding or reducing damage or deterioration of the alkaloid with poor stability, and being capable of effectively obtaining the total alkaloid extraction or the total alkaloid dry powder of the nauclea offcinalis; (2) reducing preparation procedures and loss of the total alkaloid; (3) enabling the density of the total alkaloid obtained by the acid water solution of the alcohol to be improved by one third and enabling the types of active alkaloid to be increased by over one time; and (4) providing a simple measurement method for measuring the total alkali in the extraction of the nauclea offcinalis, and selecting wavelength scope of measurement of the total alkaloid.

The invention relates to the technical field of tea drinking, and in particular to a brewing method for kumquat tea. In order to solve the problem that vitamin C is destroyed by high temperature whenthe traditional brewing method uses boiled water for brewing and the problem that the aromatic components of kumquats cannot be extracted by low-temperature brewing, the invention provides the brewingmethod for kumquat tea, which comprises the following steps: soaking, microwave treatment, first-time brewing and second-time brewing. After the kumquat tea is soaked, on one hand, the problem that the aromatic components can hardly be extracted under lower water temperature after the kumquat tea is dried is solved, on the other hand, by utilizing the characteristics of high water medium loss factor and strong microwave absorption, when treated by microwaves, the soaked kumquat tea can be more uniformly heated, consequently, the extraction of the aromatic components is effectively increased when the kumquat tea is brewed under low water temperature, moreover, low-temperature brewing can reduce the extraction of caffeine, and thereby the bitter taste of tea soup is improved. The kumquat tea brewed by the method disclosed by the invention has the characteristics of high extracted vitamin C content, rich kumquat flavor and refreshing and bitterless taste.

The invention relates to a honey beverage for dispelling alcohol effects and protecting liver and a preparation method thereof. The honey beverage comprises the following raw materials in parts by weight: 13-18 parts of pueraria, 12-16 parts of pericarpium citri reticulatae, 10-15 parts of hawthorns, 8-12 parts of wolfberries, 6-10 parts of poria cocos, 6-10 parts of dandelion, 5-8 parts of carrots, 3-6 parts of liquorice, 3-6 parts of chrysanthemum, 2-5 parts of codonopsis pilosula, 1-3 parts of semen cassiae, 1-3 parts of beef liver powder and 4-7 parts of honey. The honey beverage for dispelling alcohol effects and protecting liver prepared according to the method disclosed by the invention is capable of fully leaching the active matters in the raw materials; no preservative is added into the raw materials; the prepared product conforms to the diet health and safety concept of the modern people; the honey beverage is capable of effectively dispelling alcohol effects and protecting liver, regulating intestinal tract movement and enhancing the immunity of a human body; the honey beverage is free from any side effect, is capable of effectively relieving the damage of alcohol to theliver and has the advantages of convenience in material taking, simple preparation method, suitability for large-scale production and high product stability.

The invention provides a brewing method of high calcium and high polyphenol content Vitis amurensis wine brewing pomace vinegar. The main process consists of: first, mixing pomace with water in a ratio of 1:1-1:5 (W / V) and conducting pulping for 20-40s to form a uniform Vitis amurensis pomace mixed fruit pulp, then subjecting the fruit pulp to ultrasonic treatment under an ultrasonic power of 125-175W at 60-80DEG C for 10-30min, then adjusting the alcoholic strength of the treated fruit pulp to 5-11% (V / W), then inoculating activated acetic acid bacterial strain according to 10-16% (V / W) and carrying out fermentation at 25-35DEG C for 8-10d, performing centrifugation, then adding calcium chloride according to a ratio of 2.0g / 100g (calcium chloride / fruit vinegar), and carrying out centrifugation and sterilization so as to obtain original fruit vinegar. The original fruit vinegar brewed by the process is grape red, sour and sweet and free of astringency, and has high polyphenol and calcium content, the polyphenol content is higher than that of fruit vinegar finished products produced by the traditional process (i.e. fermentation of raw materials without ultrasonic treatment) by 85.12mg / L (35.72%), the calcium content is up to 638mg / 100g, which is higher than that of Shanxi aged vinegar (306mg / 100g), Zhenjiang fragrant vinegar (240mg / 100g) and rice vinegar (30mg / 100g).

The invention discloses golden camellia honey. The golden camellia honey is prepared from the following materials in parts by weight: 30-45 parts of a golden camellia concentrated solution, 1-5 parts of water soluble pearl powder, 5-8 parts of yam flour, and 5-10 parts of oligosaccharide, wherein the golden camellia concentrated solution adopts an aqueous solution containing dry substances with a mass fraction of 30-70%; the dry substances comprise golden camellia, honeysuckle, calendula officinalis, taraxacum and honey; the mass fraction ratio of the dry substances is 12:(1-3): (2-4):(1-4):(4-8) in sequence. Compared with the conventional golden camellia drink, the golden camellia honey disclosed by the invention has the functions of clearing away heat and toxic materials and relieving inflammation, can obviously solve the problems of appetite, sleepness, stagnation of liver Qi and chest distress. The invention further discloses a preparation method for the golden camellia honey, and the method comprises the steps of cleaning, drying, impregnating and concentrating; the method is simple, and can increase the dissolving-out amount of health protection components in the golden camellia honey to the largest extent.

The invention belongs to the technical field of separation and purification of spirulina blue colors, and concretely relates to a high-purity odorless spirulina blue color, and a preparation method and an application thereof. The high-purity odorless spirulina blue color is obtained by the steps of dispersion, extraction, flocculation, filtration, purification, concentration, deodorization and concentration. Water extraction and phosphate buffer solution extraction modes are adopted, and the osmotic pressure of a system is increased stepwise to stepwise improve the extraction rate and the extraction amount of phycocyanins, the whole extraction and flocculation process does not require low temperature, ultrasonication or high-pressure homogenization, so the method has the advantages of mildconditions, low damages to the color, short extraction cycle, no excessive introduction of other ions or components, removal of calcium ions and phosphate ions by flocculation, and protection of thephycocyanins in the presence of sodium ions and chloride ions; the high-purity odorless spirulina blue color can be well removed by subsequent membrane separation, and belongs to a processing aid allowed in foods. The obtained high-purity odorless spirulina blue color has the advantages of high purity, high color value, high yield and odorlessness.

The invention discloses a two-stage acid leaching washing pressure filtration process of a metal acid leaching solution. The process comprises the following steps: 1) injecting the metal acid leaching solution into a filter chamber of a membrane filter press under pressure to obtain filter cakes, and pre-pressing the filter cakes under a pre-pressing pressure of 0.2-0.6MPa; 2) injecting acid into the filter chamber to perform two-stage acid leaching on the filter cakes under the pre-pressing state; 3) at the end of the two-stage acid leaching treatment, keeping the pre-pressing state and continuously injecting a washing solution into the filter chamber for washing the filter chamber; and 4) performing high-pressure press filtering on the substance in the filter chamber after the washing treatment is finished, and discharging the filter residues after the press filtering treatment is ended. On the basis of the two-stage acid leaching washing pressure filtration process, the invention also discloses a device for the process. The process and the device are applied to the wet electrolytic industry for extracting metal compounds from ores.

The invention provides radix codonopsis wine and a preparation method thereof, relating to the technical field of juice wine. The preparation method comprises the steps of mixing dry red wine with radix codonopsis in a mass ratio of (20-50) to 1, extracting the obtained mixture at 14-20 DEG C for 25-40 days, filtering, and clarifying, so as to obtain the radix codonopsis wine. By controlling the mixing proportion of radix codonopsis and the dry red wine, the radix codonopsis wine is good in taste and strong in wine aroma and has the health efficacies of benefiting vital energy, nourishing blood, harmonizing spleen and stomach, helping the production of saliva, clearing away the lung-heat, prolonging life and preventing cancers. By virtue of the preparation method, the flavor similar to thedry red wine can be achieved even the medical flavor of radix codonopsis is relatively strong, and the blank of juice wine with a good flavor at present is filled up.

The invention discloses microparticle tartary buckwheat tea. The microparticle tartary buckwheat tea is characterized by being prepared from the following raw materials in parts by weight: 50-100 parts of tartary buckwheat husk powder and 10 parts of tartary buckwheat special yellow powder. By scientific mixing experimental design, the brass extraction amount is the highest under optimal proportions of two of the raw materials, namely the tartary buckwheat husk powder, tartary buckwheat core powder and the tartary buckwheat special yellow powder, of the microparticle tartary buckwheat tea disclosed by the invention. A prepared product is compact and solid in materials, and cannot become turbid or disperse in liquor in a brewing process.

The invention discloses tea flower juice as well as an extracting method thereof, tea flower juice beverage and a preparation method thereof, and belongs to the technical field of beverage preparation. The extracting method for the tea flower juice comprises the following steps: treating dried and crushed tea flower powder for 1-7 minutes under a condition with microwave power of 450-560 W, and leaching for 8-12 minutes under conditions with a solid-liquid ratio being 1 to (50-70) and a temperature being 50-70 DEG C. A microwave-assisted leaching mode is combined with a special extracting process, so that main quality components in tea flowers are great in leaching amount and are good in sensory quality. The tea flower juice beverage is prepared by adding 15-25 mL of tea flower juice, 1-4mg of sucralose and 10-30 mg of vitamin C into every 100 mL of pure water, is soft in finished product flavor, is free of peculiar smell, has sweet and slightly sour, is soft and coordinated in flavor, is slightly yellow in color, is bright and transparent, is uniform and consistent, and is free of a layering phenomenon.

The invention relates to health-care dark green tea containing small yellow ginger and glycyrrhiza and a processing method of the health-care dark green tea. The health-care dark green tea is prepared from the following raw materials in parts by weight of 1-5 parts of the small yellow ginger, 10-20 parts of the glycyrrhiza and 80-120 parts of raw dark green tea, wherein the raw dark green tea is ecological raw dark green tea in Guizhou, and the small yellow ginger is small ginger growing locally in Guizhou Anshun. The health-care dark green tea prepared by the processing method disclosed by the invention adopts the small yellow ginger, the glycyrrhiza and the Guizhou ecological dark green tea as the raw materials, and the raw material composition is relatively single; the preparation method is simple; the health-care dark green tea is convenient to drink, the warm fragrance of the dark green tea is maintained, the special taste of the small yellow ginger and the glycyrrhiza is achieved, and the health-care dark green tea also has a health-care function; the dark green tea has the effects of killing bacteria, diminishing inflammation, inducing diuresis, detoxifying the body, resisting oxidation, delaying senescence, resisting cancer, resisting mutation, reducing blood fat, reducing blood pressure, improving sugar metabolism, reducing blood sugar and preventing and treating diabetes mellitus; and the small yellow ginger and the glycyrrhiza are matched, gingerol and curcumene in the small yellow ginger are utilized, and through the blending effect of the glycyrrhiza, the health-care effect of the dark green tea is remarkable.

The invention discloses aloe rice wine and a protection technology thereof, overcoming the detects of low leaching rate of the effective components, bit taste and the like when the aloe rice wine is produced traditionally. The aloe rice wine is prepared by mixing 15.6-62.95% of grain liquor soaking liquid containing aloe and assistant traditional Chinese medicinal material effective components and 37.1-84.4% of glutinous rice wine according to weight ratio, wherein the grain liquor soaking liquid is obtained by mixing, soaking and extracting liquids of the following materials in parts by weight: 1000 parts of 35-42 degree-grain liquor , 20-40 parts of aloe dry leaves, 10-30 parts of sea-buckthorn, 10-30 parts of wolfberry fruit, 10-25 parts of hawthorn fruit and 5-15 parts of liquorice. The production technology comprises the following steps of: drying aloe fresh leaves, soaking the dry leaves with liquor with a medium degree, filtering the soaking liquid and merging with the glutinous rice wine, storing the merged liquid in a cellar for a period of time, fine filtering to remove sediments and sterilizing to obtain a finish product.

The invention discloses a method for preventing damage by snails in organic cultivation of Dendrobium officinale Kimura et Migo by using tea cake powder extract, which includes the following steps: preparing tea cake powder extract solution; preparing garlic extract solution; mixing the tea cake powder extract solution with the garlic extract solution to obtain mixed extract solution; diluting themixed extract solution with water by a factor of 100 to 300; and evenly spraying the mixed extract solution diluted by a factor of 100-300 on Dendrobium officinale Kimura et Migo cultivation seedlingbeds at 7-9pm every 5-7 days during the periods from March to May and from September to November. The garlic extract prevents damage by snails mainly by odor. By mixing the two kinds of solutions atan appropriate ratio and setting the application time, snails can be repelled. Therefore, the yield of Dendrobium officinale Kimura et Migo is improved, and the eating safety is ensured.

The invention discloses a method for preparing magnesium salt from boric sludge, and belongs to the technical field of inorganic chemical waste treatment and comprehensive utilization. The method comprises the following steps: cleaning the boric sludge to remove boron, drying, activating, grinding and crushing, and carrying out magnetic separation treatment to remove iron, so as to obtain pretreated boric sludge; and leaching by using strong acid to obtain a solution formed by sulfide / chloride, and cooling, crystallizing and filtering to obtain magnesium salt crystals, so that the purity of the product is higher. According to the present invention, the boric sludge is converted from the industrial waste material into the high value-added magnesium salt, the magnesium element in the boric sludge is extracted, the technology is the treatment and utilization of the boric sludge waste material, the anhydrous magnesium sulfate / magnesium chloride hexahydrate is prepared, the chemical solids are treated, the environmental requirements are met, and the economic benefits are increased for enterprises. Compared with an existing method for extracting magnesium in the boric sludge, activation and magnetic separation are matched, and the acid utilization rate and the magnesium leaching rate can be increased.

The invention relates to a maca teabag and a preparation method thereof. The maca teabag is prepared from the raw materials of 10-15 parts of maca, 5-8 parts of raspberries, 3-6 parts of barley, 2-4 parts of osmanthus fragrans and 1-3 part(s) of Pu-Er ripe tea through the steps of raw material selecting, smashing, screening with a vibrating screen, weighting, component mixing and final subpackage. The maca teabag is reasonable in components and ratio design, and rich in nutrition, and the effects of all components are supplementary to one another; the preparation method is simple and convenient, and the cost is low; the maca teabag is prepared from natural components completely, so that original taste and flavour are kept, the tea soup of the maca teabag is brownish yellow, strong in wheat flavor and flower fragrance, and mellow in taste; the dissolution rate is high, extract is multiple, brewing resistance is achieved, maca teabag is carried and drunk conveniently by people, and a new beverage with the efficacities of tonifying kidney, building body and resisting fatigue is provided.

The invention discloses a preparation process of liquorice and sow thistle water. The preparation process comprises the following steps of: mixing yellow river water, liquorice leaching liquor and sowthistle leaching liquor, and performing precipitation filtration and refined filtration on the adopted yellow river water (locally known as 'Baicao Water') to reach the standard of purified water; collecting fresh liquorice, extracting supernatant at low temperature, deeply digging sow thistle and root and leaf leaching supernatant, and mixing. According to the health-preserving view of drinkingwater source tracing in the Medical Classic of the Yellow Emperor, the obtained liquorice and sow thistle water has the taste of bitter first and sweet later and has the effects of clearing summer-heat and removing toxicity.