37results about How to "Short concentration time" patented technology

The invention relates to a total-tailings paste filling and stockpiling combined treatment method based on a deep-cone thickener. A combined treatment system is composed of a one-stage or multi-stage pump station, the deep-cone thickener and a two-segment horizontal stirring device. The deep-cone thickener is arranged near the multi-stage pump station. A continuous feeding and discharging mode is adopted for achieving the continuous concentration process, and the two functions of filling and tailings stockpiling are both taken into consideration. In the running process of a filling system, total tailings of a concentration plant are completely thrown into the deep-cone thickener through the one-stage or multi-stage pump station. When filling is needed, deep-cone bottom flow is pumped to the two-segment stirrer through a mortar pump and is mixed with cement, and qualified paste is prepared and flows to or is pumped to a stope. When filling is not needed, the bottom flow is pumped by a plunger pump to a tailings pond by means of the pump station, and stockpiling of paste is performed. The method can well solve the filling problem of a gob and the stockpiling problem of tailings at the same time, filling cost is greatly reduced, the strength of filling bodies is improved, discharge of the tailings is reduced to the maximum extent, and meanwhile tailings paste is discharged.

Disclosed is a method for producing high-purity lithium carbonate. The method includes: removing magnesium and boron from a brine; separating and removing the remaining magnesium and calcium; concentrating the resulting brine by spray drying to form a powder; washing the powder to concentrate lithium; and carbonating the lithium ions with sodium carbonate (Na2CO3).

The invention discloses a preparation method of Lproline, and the method comprises the following steps: 1, filtering proline fermentation liquor through a filter membrane to obtain ultrafiltration filtrate, and cleaning with pure water to obtain microfiltration filtrate; 2, enabling the micro-filtration clear liquid to sequentially pass through weakly-alkaline anion resin and weakly-acidic cation resin, and performing filtering to obtain filtrate; 3, adding activated carbon into the filtrate for decolorization, and performing filtering to obtain a decolorized solution containing proline; 4, evaporating and concentrating the decolorized solution to obtain a concentrated solution, wherein the content of the concentrated solution is 45-50%; 5, cooling the concentrated solution to 10 DEG C, performing natural crystallizing, and performing centrifuging to obtain wet crystals; 6, putting the wet crystals into a vacuum drying machine for drying to obtain a finished product of Lproline. The method for preparing the Lproline is relatively simple in process control, does not generate a large amount of pollutants in the production process, and is environment-friendly.

The invention discloses a preparation method of a semen armeniacae amarae and thunberg fritillary bulb oral liquid for relieving cough and resolving phlegm. The preparation method is characterized by comprising the following steps of: jointly decocting sweet root bark of white mulberry, fried semen armeniacae amarae, thunberg fritillary bulb and liquorice to reserve an extracting liquid, obtaining clear paste through three-effect decompression concentration, sinking the clear paste by water and centrifugalizing and reserving a clear liquid; independently decocting sweet polygala tenuifolia, independently storing the extracting liquid, and combining the extracting liquid with the clear liquid; adjusting the pH twice when the volume is fixed and before filling; sterilizing for 40 minutes at 103 DEG C and filling. The preparation method disclosed by the invention has the beneficial effects that 1, the polygala tenuifolia is independently decocted to avoid the problem that the polygala tenuifolia is bubbled to lead to loss of effective components when the extracting liquid is concentrated; 2, three-effect decompression concentration is adopted, so that not only can the concentration temperature be low, the moisture is quick to evaporate, the concentration time is short and the energy consumption is reduced, but also the effective components of the product are effectively prevented from being damaged by high temperature foremost; 3, the pH value is adjusted twice to ensure the stability of product quality; 4, insulative overnight aging at 70-80 DEG C can be used for effectively preventing the liquid medicine from rancidity; 5, the oral liquid is sterilized for 40 minutes at 103 DEG C, and the temperature is moderate, so that the effective components of the liquid medicine are effectively protected.

The invention belongs to the field of medicine preparation, and particularly discloses a preparation method for a condensed pill of traditional Chinese medicines. The preparation method comprises thefollowing steps: preparing particles from a part of a medicinal material extract and fine medicinal material powder, carrying out pressing to from a pill mold, adopting the pill mold as a base pill, and rounding the remaining prescription amounts of the medicinal material extract and the fine medicinal material powder and a proper amount of an excipient to form the pill. According to the preparation method disclosed by the invention, effective components can be reserved to the greatest extent; the preparation method well solves problems in proportioning stability of the extract and the medicinal powder; prepared condensed pills are small in pill weight difference, accurate in dosage, shortened in dissolution and dispersion time limit, good in absorption, stable and controllable in qualityand improved in curative effect; a production period is shortened; process is simple; a production environmental is good in sanitation condition; labor intensity is reduced; various quality indexes are obviously improved; and good social and economic benefits are obtained.

The invention discloses a preparation method for high-purity polyene phosphatidylcholine. According to the method, high-purity polyene phosphatidylcholine is prepared by subjecting soyabean lecithin powder to adsorption by neutral alumina and silica gel respectively. Polyene phosphatidylcholine prepared by using the method is low in peroxide value and high in purity; the preparation method is simple in process operation and beneficial for industrial production; and the purity and the content of polyene phosphatidylcholine can reach 98% or more and 95% or more, respectively, and all the relatedsubstances are qualified.

The invention relates to a sludge treatment technology, especially relates to a municipal domestic sludge air flotation concentrating treatment device and a method thereof, and belongs to the technical field of wastewater waste gas treatment. The municipal domestic sludge air flotation concentrating treatment device comprises a sludge conditioning unit for performing quantitative dosing, mixing and reacting, and a cavitation air floatation concentrating unit for dissolving air in sludge and completing separation; and an air floating head for cavitating the dissolved air is arranged in the cavitation air floatation concentrating unit, the air floating head is connected with a hollow rotating shaft, the air floating head includes a central disk communicated with the rotating shaft and a plurality of dissolved air branch tubes arranged at the side part of the central disk, and the dissolved air branch tubes have a plurality of micro-pores for ventilation. The device has the advantages oflarge single-machine processing capability, short concentrating time, simplicity, electricity consumption saving, and adjustable reflux ratio, and effectively solves the problems of large occupied area, sludge digestion, phosphorus release reaction and large and completed device in the municipal domestic sludge air flotation concentrating treatment process.

The invention discloses a method for preparing an L-citrulline crude product and L-citrulline prepared through the method. The method for preparing the L-citrulline crude product includes the steps of preparing L-citrulline liquid, preparing the L-citrulline crude product from the L-citrulline liquid, refining the crude product, and obtaining an L-citrulline finished product. When the method is used for producing the L-citrulline crude product, no ethyl alcohol is used, so the method has the advantages that production conditions are mild, concentration time is short, product purity is high, yield is high and production cost is low.

The invention discloses a method for preparing an L-citrulline crude product and L-citrulline prepared through the method. The method for preparing the L-citrulline crude product includes the steps of preparing L-citrulline liquid, preparing the L-citrulline crude product from the L-citrulline liquid, refining the crude product, and obtaining an L-citrulline finished product. When the method is used for producing the L-citrulline crude product, no ethyl alcohol is used, so the method has the advantages that production conditions are mild, concentration time is short, product purity is high, yield is high and production cost is low.

The invention relates to a total-tailings paste filling and stockpiling combined treatment method based on a deep-cone thickener. A combined treatment system is composed of a one-stage or multi-stage pump station, the deep-cone thickener and a two-segment horizontal stirring device. The deep-cone thickener is arranged near the multi-stage pump station. A continuous feeding and discharging mode is adopted for achieving the continuous concentration process, and the two functions of filling and tailings stockpiling are both taken into consideration. In the running process of a filling system, total tailings of a concentration plant are completely thrown into the deep-cone thickener through the one-stage or multi-stage pump station. When filling is needed, deep-cone bottom flow is pumped to the two-segment stirrer through a mortar pump and is mixed with cement, and qualified paste is prepared and flows to or is pumped to a stope. When filling is not needed, the bottom flow is pumped by a plunger pump to a tailings pond by means of the pump station, and stockpiling of paste is performed. The method can well solve the filling problem of a gob and the stockpiling problem of tailings at the same time, filling cost is greatly reduced, the strength of filling bodies is improved, discharge of the tailings is reduced to the maximum extent, and meanwhile tailings paste is discharged.

The invention relates to a method for detecting content of orange fusidic acid in fermentation products, which comprises following steps of: 1. sample color value measuring step; 2. sample processing before detecting, includes: (1) extracting orange fusidic acid from sample: weighing up sample; adding methyl alcohol extract; mixing with ultrasonic and then centrifugation extracting; depression compressing in ambient temperature; (2) making absorbing chromatography column for crude separation step includes: column packing with neutral absorbing resin washed with methyl alcohol; (3) crude separation of the orange fusidic acid in the sample; 3. identifying conditions of liquid chromatography; 4. analyzing chromatography; 5. making standard solution and standard curve; 6. calculating results.

The invention discloses a preparation method of a cold heat-clearing tablet. The preparation method comprises the following steps: (1) weighing raw materials; (2) taking schizonepeta spike, mint and perilla leaf, adding water which is 8-12 times of the mass of the three traditional Chinese medicines, distilling to extract volatile oil for 1.0-2.0 hours, and collecting the distilled water solution in another container; adding water into decoction dregs and other medicines, decocting twice, adding water which is 8-12 times of the mass of all the traditional Chinese medicines in the step (1) for the first time, decocting for 1.0-2.0 hours, and filtering to obtain filtrate; after filtering, adding water which is 6-10 times of the mass of all the traditional Chinese medicines in the step (1) into filter residues, decocting for 1.0-2.0 hours, and filtering to obtain filtrate; combining the two filtrates with the distilled aqueous solution; and (3) combining the decoctions, concentrating under reduced pressure, adding auxiliary materials, granulating, spraying the volatile oil in the step (2), and pressing into tablets, or coating with a film coating or a sugar coating to obtain the cold and heat clearing tablets. The method is low in extraction temperature, low in energy consumption, short in extraction time, small in heat-sensitive component loss and high in effective component recovery rate.

The invention relates to a method for concentrating hirudin in fermentation broth and belongs to the technical field of biological medicines. The method comprises the steps of adding reversed-phase chromatography filler in hirudin fermentation broth for adsorption, performing eluting adsorption precipitation, and collecting effluent, namely hirudin concentrated solution, wherein the reversed-phase chromatography filler is formed by bonding hydrophobic groups to the surface of silica gel substrate. The whole process of adsorption and elution is simple to operate, a purification effect is also achieved while concentration is performed, and the hirudin egg white recovery rate is 70% or above.

The invention provides a sludge concentration method and a filtering separation device thereof. The concentration method comprises the following steps of: performing filtering separation on primary sedimentation sludge or remained active sludge in a secondary sedimentation tank or mixed sludge of the primary sedimentation sludge and the remained active sludge in the filtering separation device and by tubular filter cores to obtain concentrated sludge, and discharging the filtered clear solution; putting the concentrated sludge on a filter press for press filter dewatering; and obtaining a sludge cake and transferring the sludge cake. The filtering separation device comprises a cylinder, tubular filter cores vertically distributed in the cylinder, a fixing plate, a water collection tank, asludge inlet arranged on the cylinder, a sludge collection zone, a sludge discharge channel provided with a valve and the like. The sludge concentration method and the filtering separation device have the advantages of low water content in the concentrated sludge, short concentration time, small floor areas, small device volume, low investment cost, low operating cost and long service life of thefilter cores due to the use of back wash filter cores.

The invention discloses a method for preparing phosphoric acid with high density by microwave heating of fertilizer grade phosphoric acid, the method comprises the following steps: taking the fertilizer grade phosphoric acid produced by a wet method as a raw material acid, then pretreating and removing arsenic, removing fluorine and filtering, then performing microwave heating and concentrating to obtain the phosphoric acid with high density. The obtained phosphoric pentoxide possesses the characteristics of high content, small corrosivity on the equipment and material and short concentration time; and the method of the invention has the advantages of simple process, easy industrialization, low cost and less investment, the storage cost and transportation cost of phosphoric acid can be simultaneously reduced, thereby the requirements of different users can be satisfied, and the method of the invention is a production technology with good economic benefit.

The invention belongs to the field of medicine preparation, and specifically discloses a method for preparing concentrated traditional Chinese medicine pills. In the method, part of medicinal material extracts and fine powders of medicinal materials are first made into granules, and pressed into pill molds, and then the pill molds are used as the base pills. The remaining prescription amount of medicinal material extract, drug fine powder and appropriate amount of excipients are rounded into pills. The preparation method of the present invention can retain the active ingredients to the greatest extent, better solve the ratio stability of the extract or extract and the medicinal powder, the difference in pill weight is small, the dosage is accurate, the time limit for dissolution is shortened, the absorption is good, and the quality is stable. Controllable, improved curative effect, shortened production cycle, simple process, good production environment and sanitation conditions, reduced labor intensity, obvious improvement of various quality indicators, and better social and economic benefits.

The invention discloses a preparation method of a cold heat-clearing tablet. The preparation method comprises the following steps: (1) weighing raw materials; (2) preparing three traditional Chinese medicines of schizonepeta spikes, mint and perilla leaves, adding water which is 8-12 times of mass of weights of the traditional Chinese medicines, distilling to extract volatile oil for 1.0-2.0 hours, and collecting a distilled water solution; adding water into decoction residues and other medicines, and carrying out decoction twice, namely adding water which is 8-12 times of mass of the all traditional Chinese medicines, carrying out decoction for 1.0-2.0 hours, and filtering, so as to obtain a filtrate; adding water which is 6-10 times of mass of the all traditional Chinese medicines into the filtered decoction residues, carrying out decoction for 1.0-2.0 hours, and filtering, so as to obtain a filtrate; combining two filtrates with the distilled solution; and (3) combining decoction solutions, carrying out reduced pressure concentration, adding auxiliary materials, carrying out granulation, spraying the volatile oil obtained in the step (2), and carrying out tabletting, so as to form a base tablet, or a coated film or a sugar coating, namely the cold heat-clearing tablet. The preparation method has the beneficial effects that the extraction temperature is low, the energy consumption is low, the extraction time is short, the loss of temperature-sensitive components is low, and the recovery rate of effective components is high.