481 results about "Chloride potassium" patented technology

The invention discloses a fermentation medium for regulating and controlling a clostridium aerovorans target product and a fermentation method of the clostridium aerovorans target product. The medium comprises a basic component and a regulating component, the basic components comprise ammonium chloride, potassium chloride, magnesium sulfate heptahydrate, sodium chloride, monopotassium phosphate, yeast powder, calcium chloride dihydrate, sodium selenite, nickel chloride hexahydrate, biotin, folic acid, pyridoxine hydrochloride, thiamine, riboflavin, nicotinic acid, D-calcium pantothenate, cobalamin, para aminobenzoic acid and lipoic acid; the adjusting component comprises sodium tungstate, ferrous sulfate and sodium molybdate, sodium tungstate and ferrous sulfate have a forward adjusting effect on increasing the yield of acetic acid, ethanol and butanol in the target product, and sodium molybdate has a reverse adjusting effect on the target product. By optimizing the proportion of trace elements in the culture medium, the clostridium metabolism efficiency is improved, synthesis of a target product is regulated and controlled, and the method is particularly suitable for industrial production of acetic acid, ethanol, butanol and the like.

The invention provides a method for promoting generation of tea acid from Nemania sp YAFEF112, and relates to the technical field of microbial culture. According to the method, mycelia of Nemania sp YAFEF112 are inoculated into a culture medium containing pruned walnut branches for culture, the culture medium is an MM culture medium, and the specific formula of the culture medium comprises 1.52 g / L of monopotassium phosphate, 0.52 g / L of magnesium sulfate, 6 g / L of sodium nitrate and 0.52 g / L of potassium chloride. According to the method, the defects in the prior art are overcome, and good conditions are provided for the production of the tea pickled acid by optimizing the formula of the fermentation culture medium, adding pruned walnut branches into the culture medium, improving the fermentation conditions and increasing the content of the tea pickled acid in the Nemania sp YAFEF112 hyphae.

The present invention relates to a high-salt wastewater resource utilization technology, particularly to the resource utilization of potassium nitrate mother liquor, and specifically to a method for recycling potassium resources in the potassium nitrate mother liquor. The method comprises brine adjustment, first-stage cooling, second-stage cooling, solid-liquid separation, decomposition and washing, and evaporation and concentration. A decomposition liquid produced by the decomposition and washing is mixed with a concentrated liquid produced by evaporation and concentration to adjust the MgCl2 content in the system. The brine-adjusted system is cooled in two stages, followed by solid-liquid separation to obtain a crystalline solid and a crystalline mother liquor. The crystalline solid is added to the potassium nitrate mother liquor and stirred thoroughly, followed by solid-liquid separation to obtain potassium chloride solid and a decomposition liquid. The potassium chloride solid is reused as a production raw material. The crystalline mother liquor is evaporated and concentrated, and a portion of the concentrated liquid and the decomposition liquid are recycled by mixing brine. The remaining concentrated liquid is cooled to room temperature to obtain MgCl2·6H2O solid. The present invention recycles potassium chloride in the by-product mother liquor without adding additional steam and water.

The invention discloses a preparation technology of high-purity potassium chloride, and relates to the technical field of potassium chloride preparation, the preparation technology comprises the steps of raw material treatment, impurity removal, dissolution and filtration, a crystallization reaction kettle stage and drying and packaging, a driving motor is arranged at the top end of a crystallization kettle main body, and a reaction cavity is formed in the crystallization kettle main body; the inner wall of the collecting box is scraped through the edge of a fixed scraper, crystals which are not cleaned up on the surface of the collecting box are cleaned again through a Y-shaped scraper, and the situation that the crystals on the surface of the collecting box are omitted and left on the surface of the collecting box is avoided; the crystals on the surface of the collecting box are scraped, so that high-purity potassium chloride can be discharged, the end of the scraping knife is always in contact with the side wall of the collecting box, the potassium chloride crystals on the side wall of the collecting box are cleaned more thoroughly, and the collecting box and the stirring fork rotate in opposite directions, so that the potassium chloride crystals on the surface of the collecting box can be quickly cleaned.

The invention discloses an anti-freezing solution for improving the survival rate of sperms of Chinese prawns and a cryopreservation method of the anti-freezing solution, and belongs to the technical field of low-temperature biology and reproductive science. The invention provides an anti-freezing solution for cryopreservation of sperms of Chinese prawns, which comprises a basic solution and an anti-freezing agent, and the anti-freezing agent is dimethyl sulfoxide with the volume fraction of 10% or glycerol with the volume fraction of 10%; the basic liquid contains 23.69 g of sodium chloride, 1.1 g of potassium chloride, 14.8 g of magnesium chloride hexahydrate, 4.3 g of sodium sulfate, 0.23 g of sodium bicarbonate, 1.12 g of calcium chloride and distilled water with the constant volume of 1000 mL. According to the cryopreservation method provided by the invention, 10% dimethyl sulfoxide or 10% glycerol is adopted as an antifreeze agent, the sperm density is controlled to be 1 * 10 < 7 > / mL, and step-by-step cooling is carried out, so that the survival rate of unfrozen sperms reaches 90% or above. The long-term preservation effect of the Chinese prawn sperms is remarkably improved, and the method is suitable for germplasm resource protection and efficient breeding.

The invention discloses a composite inducer for promoting adhesion and metamorphosis of marine bivalve mollusk larvae and an application method of the composite inducer. The composite inducer for promoting adhesion and metamorphosis of the marine bivalve mollusk larvae comprises glutamine, glutamic acid, potassium chloride, calcium chloride and taurine, and the concentration ratio of the glutamine to the glutamic acid to the potassium chloride to the calcium chloride to the taurine is 1: 1: 2 * 10: 1.7 * 10: 4. According to the application, glutamine, potassium ions, calcium ions, glutamic acid and taurine are matched, the application effect of the glutamine, the potassium ions, the calcium ions, the glutamic acid and the taurine in the aspect of improving the attachment and metamorphosis rate of the shellfish larvae is defined, the technical blank of multi-component cooperative regulation and control of the attachment and metamorphosis of the shellfish at present is filled, a new solution is provided for bivalve shellfish fry production, and the application prospect is wide. The method is of great significance in promoting healthy development of the mariculture industry.

The invention discloses a low-sodium myofibrillar protein flavor prediction method and a low-sodium myofibrillar protein flavor prediction device. The method comprises the following steps: firstly, constructing a protein-flavor interaction system containing myofibrillar protein, potassium chloride, kappa-carrageenan and representative aldehyde flavor compounds; then, by means of spectroscopy, rheometer combination, an electronic tongue and the like, protein conformational change, typical aldehyde molecule binding rate and taste features are represented in a multi-dimensional mode. And establishing a random forest prediction model, taking protein conformation parameters as input, and taking a flavor binding rate and effective taste intensity as output. The model can reveal cross correlation between protein conformations and functions and identify key conformation parameters that affect flavor. And in combination with quantification and prediction capabilities of the model, a conformation-flavor relationship can be systematically analyzed, a basis is provided for optimization of a low-sodium formula, flavor is enhanced while salty taste is increased and bitter taste is inhibited, and healthy and sustainable development of low-sodium meat products is promoted.

The invention discloses an environment-friendly snow melting agent which is mainly prepared from the following raw materials in percentage by mass: 20-50% of potassium acetate, 10-16% of potassium chloride, 4-10% of calcium chloride and calcium acetate, 3-7% of magnesium chloride, 10-30% of an ice-resistant binder, 11-17% of a soil protective agent, 5-6% of cellulose and 3-9% of a plant protective agent. The ice-resistant binder is one or a combination of more of calcium acetate, magnesium acetate, potassium acetate and potassium formate, the mass ratio of calcium acetate to magnesium acetate is 3: (7.5-8.5), and the soil protective agent comprises 5-15% of diatomite and 10-20% of bentonite. Compared with the prior art, the environment-friendly snow melting agent disclosed by the invention can reduce the freezing point, prevent adhesion of an ice layer and a road surface and accelerate melting of an ice surface, so that a melted ice-snow-water mixture is easier to remove, effective recycling of resources is realized, pollution to the environment is reduced, and meanwhile, the treatment pressure of wastes is reduced.

The invention relates to the field of potassium chloride purification, and provides an analytically pure potassium chloride purification method, which comprises: S1, dissolving industrial grade potassium chloride, adding a refining agent to remove impurities, and filtering to obtain a supersaturated potassium chloride solution; s2, performing variable-speed cooling crystallization treatment on the supersaturated potassium chloride solution to obtain a potassium chloride crystal mixture; s3, performing crystal layer pretreatment on the potassium chloride crystal mixture to obtain a potassium chloride crystal layer; s4, carrying out gradient spraying washing treatment on the potassium chloride crystal layer to obtain a potassium chloride crystal wet material; s5, drying the potassium chloride crystal wet material to obtain analytically pure potassium chloride; the method is simple in process equipment and mild in operation condition, and analytically pure potassium chloride can be stably prepared under the condition of conventional equipment.

The invention discloses a special slow-release fertilizer for wheat in saline-alkali soil as well as a preparation method and application thereof, and relates to the technical field of slow-release fertilizers. The fertilizer contains various functional substances and a microbial agent, and specifically contains the following components in parts by weight: 5-10 parts of urea, 0.5-3 parts of potassium chloride, 5-10 parts of diammonium phosphate, 2-5 parts of triple superphosphate, 0.5-1 part of magnesium sulfate, 0.5-1 part of zinc sulfate, 0.2-0.5 part of boric acid, 0.2-0.4 part of resveratrol, 0.5-1 part of alginic acid, 0.3-0.5 part of fulvic acid and 1.0 part of a microbial mixed agent, and 0.1 to 0.3 part of a surfactant. According to the fertilizer, all the raw material components are reasonably compounded, the physicochemical properties of saline-alkali soil can be effectively improved while the growth requirement of wheat in the saline-alkali soil is met, and meanwhile the utilization rate of the fertilizer can be increased through the slow release effect, and damage to the environment is reduced.

The invention discloses a method for adjusting the pore opening degree of Shanghai green, and belongs to the technical field of plant detection. Shanghai leaves are placed in 20mL of open liquid containing (1) 0.5% potassium chloride and 100 [mu] M / L calcium chloride or (2) 0.5% potassium chloride and 50 [mu] M / L brassinolide or (3) 0.5% potassium chloride and 10 [mu] M / L cytokinin or (4) 0.5% potassium chloride and 5 [mu] M / L gibberellin or (5) 0.5% potassium chloride and 100 [mu] M / L methyl jasmonate, culture is performed under illumination, and the illumination time is set to be 5h, so that the pore opening degree of Shanghai is remarkably increased. Compared with a control group (containing 0.5% of potassium chloride), the pore openness of the treatment is respectively increased by 33.5%, 43.5%, 43.4%, 27.1% and 70.2%. The method disclosed by the invention lays a technical foundation for rapidly screening out the exogenous environmental stimulation factor (environical stimuli) capable of increasing the opening degree of the pore.

The utility model provides a system for treating wastewater discharged during potassium salt production in the chlor-alkali industry. According to the utility model, wastewater is separated into produced water containing sodium chloride and potassium chloride and concentrated water containing sodium sulfate by the nanofiltration assembly in advance, so that the content of sodium chloride in the wastewater is reduced, the wastewater can be changed into the produced water for producing sodium chloride, and then the produced water is evaporated and crystallized by the sodium chloride evaporation and crystallization assembly to obtain a byproduct sodium chloride; meanwhile, in order to improve the purity of the byproduct sodium chloride, mother liquor is discharged when the byproduct sodium chloride is prepared, and at the moment, the potassium chloride freezing assembly cools the mother liquor and extracts the byproduct potassium chloride, so that the potassium chloride in the wastewater is indirectly recycled, and therefore, the potassium chloride in the wastewater is recycled. The resource waste is effectively reduced; the utility model belongs to the technical field of wastewater treatment systems.

The invention discloses a desert blue-green algae large-scale culture nutrient solution and application thereof. The desert blue-green algae large-scale culture nutrient solution is prepared from urea, monopotassium phosphate, potassium chloride, sodium bicarbonate and medium trace element fertilizer. Wherein the concentrations of the urea, the monopotassium phosphate, the potassium chloride, the sodium bicarbonate and the medium trace element fertilizer are 500-550 mg / L, 20-30 mg / L, 10-15 mg / L, 10-15 mg / L and 10 mg / L respectively. The invention provides a nutrient solution special for large-scale cultivation of desert blue-green algae, and solves the technical problems of high cost, low yield and low blue-green algae purity of large-scale cultivation of desert blue-green algae in the prior art. The nutrient solution composition provided by the invention can balance each nutrient composition, so that the nutrient composition can be more suitable for the nutritional requirements of the growth of the desert blue-green algae.

The application discloses a kind of compositions, reagents and its detection method for high-throughput gene sequencing, belong to gene sequencing technical field, the composition includes Tris-HCl buffer 80-120 parts, potassium chloride 40-60 parts, ammonium sulfate 10-20 parts, magnesium chloride 15-25 parts, dNTPs mixed solution 30-50 parts, heat-stable DNA polymerase mutant 8-15 parts, PCR promoter complex 5-12 parts, modified iridium quinoline ketone complex 1-5 parts, glycerol 150-250 parts, Tween-20 1-3 parts, EDTA disodium salt 0.5-2 parts and nuclease-free ultrapure water, by introducing the modified iridium quinoline ketone complex of innovation, effectively solve the technical problems of low amplification efficiency, poor multiplex PCR reaction uniformity and high non-specific amplification background for high GC content, complex secondary structure genomic template, significantly improve the specificity of amplification, uniformity and the quality and reliability of final sequencing data.

A production process for preparing potassium chloride by using underground native carnallite ore comprises the following steps: carrying out primary crushing on the underground native carnallite ore, combining a material obtained by carrying out secondary crushing on an oversize material with an undersize material, conveying the combined material to a decomposer or a crystallizer, adding a beneficiation reagent into decomposed slurry or underflow slurry of the crystallizer, and carrying out roughing, roughing concentrate K1 and roughing tailings T1 are obtained; roughing tailings T1 are conveyed to a thickener, overflow of the thickener is collected and then returns to a decomposing tank for size mixing or flotation size mixing, and underflow of the thickener is subjected to ore grinding operation; materials discharged by the mill are conveyed to middling flotation operation to obtain middling flotation concentrate K2 and flotation tailings T2, the middling flotation concentrate K2 and decomposed slurry of the decomposing tank are subjected to roughing operation together, and roughing concentrate K1 is obtained; and the roughing concentrate K1 is subjected to secondary concentration to obtain crude potassium slurry K4, the crude potassium slurry K4 is filtered to obtain a crude potassium filter cake K5, and the crude potassium filter cake K5 is washed and filtered to obtain a potassium chloride wet material product. The product is high in recovery rate and proper in particle size.

This invention belongs to the field of plant genetic engineering technology, specifically relating to the application of H3K27me3 in regulating the cotton response to potassium chloride stress. By integrating CUT & Tag chromatin analysis and RNA-seq, this invention demonstrates that potassium chloride stress induces a reduction in H3K27me3 deposition across the entire genome, accompanied by characteristic stress phenotypes in cotton seedlings. Inhibition of H3K27me3 using RDS 3434 significantly improved KCl-induced physiological damage, confirming the functional correlation between this epigenetic marker and stress tolerance. Furthermore, virus-induced gene silencing confirmed that genes associated with H3K27me3 are important components of the cotton ion stress response network. Therefore, this invention elucidates the epigenetic landscape regulating adaptation to potassium chloride stress.

The invention belongs to the field of nano materials, and particularly relates to a C and N co-doped three-dimensional manganese oxide nano material as well as a preparation method and application thereof. The invention relates to a preparation method of a C and N co-doped three-dimensional manganese oxide nano material, which comprises the following steps: (1) mixing urea and potassium chloride, adding water, grinding into paste, freeze-drying the mixture, calcining, and naturally cooling to room temperature to obtain a C and N co-doped precursor; (2) adding the precursor into a potassium permanganate solution, and carrying out heating and stirring reaction; and (3) after the reaction is finished, centrifuging by using water and absolute ethyl alcohol, cleaning, separating, collecting a product, and drying to obtain the C and N co-doped three-dimensional manganese oxide nano material. The C and N co-doped three-dimensional manganese oxide nano material is of a unique micron flower spherical structure assembled by three-dimensional nanosheets, and is uniform in size, good in dispersity and large in specific surface area. According to the nano material, the charge transfer performance and the PMS activation capability are improved, so that the nano material has more excellent catalytic activity.

The present invention relates to the technical field of ice prevention for foundation pits, and in particular, to an ice-preventing concrete material, its application, and a method for constructing ice prevention for the side walls of foundation pits. The ice-preventing concrete material includes concrete and ice-preventing particles, and the ice-preventing particles are obtained by mixing silicate cement, chloride salts, ammonium salts, lignin, and water; the chloride salt is one of calcium chloride, magnesium chloride, potassium chloride, ferric chloride, and aluminum chloride, and the ammonium salt is one of urea, ammonium nitrate, and triethanolammonium. The present invention prevents the formation of ice hanging on the side walls of foundation pits through the slow dissolution and penetration principle of ammonium salts and chloride salts, thereby avoiding safety accidents caused by ice hanging falling; the concrete and ice-preventing particles can be mixed evenly, so that they can be effectively applied or sprayed on the side walls of foundation pits, and the preparation is simple, the degree of structural corrosion is small, the pollution to the soil is small, and it has the characteristics of economy, safety, and environmental protection.

The invention relates to a slow-release phosphorus removal agent as well as a preparation method and application thereof, in particular to a slow-release phosphorus removal agent for phosphorus pollution of a low-temperature water body as well as a preparation method and application thereof. The slow-release phosphorus removal agent comprises the following components in parts by weight: 1500 parts of potato starch, 160 parts of sodium citrate, 100 parts of ammonium sulfate, 20 parts of sodium chloride, 60 parts of potassium chloride, 10 parts of magnesium sulfate, 10 parts of calcium chloride and 1 part of maltose, wherein the weight ratio of the maltose to the pure water is 1: 20000. The preparation method comprises the following steps: 1, preparing the potato starch-based slow-release medicament; 2, forming and purifying starch microspheres; and step 3, preparing a sustained-release medicament finished product. The method has the beneficial effects that low-temperature water body phosphorus removal flora is efficiently activated, and the phosphate removal efficiency is remarkably improved; the slow-release characteristic meets the low-temperature treatment requirement, and long-acting stable phosphorus control is achieved; and the method is environment-friendly, excellent in economical efficiency and suitable for large-scale application.

The invention belongs to the technical field of drilling fluids in petroleum and natural gas development, and particularly relates to a rigid-flexible nanoparticle reinforced foam drilling fluid and a preparation method thereof. The foam drilling fluid comprises composite magnetic nanoparticles, potassium chloride, a surfactant, a nanocellulose material and deionized water, wherein the composite magnetic nanoparticle has a core-shell multi-layer structure which takes a magnetic material as an inner core and sequentially wraps a primary polymer layer, a porous carrier framework layer and a rigid-flexible composite shell layer on the outer layer, and the rigid-flexible composite shell layer consists of a flexible polymer matrix and a rigid polymer matrix. According to the foam drilling fluid, online optimization of viscosity and shear dilution characteristics of a foam drilling fluid system is realized, and dynamic regulation and control of rheological properties of the foam drilling fluid in a complex stratum environment are realized; and moreover, environmental pollution is reduced, and green well drilling and sustainable well drilling can be achieved.

A process for producing lithium hydroxide monohydrate from lithium chloride, the process comprising: (a) adding an aqueous potassium ion and hydroxide ion-containing solution to an aqueous lithium chloride-containing solution, thereby obtaining a mixture comprising lithium hydroxide, potassium chloride and water, (b) selectively precipitating potassium chloride from the mixture, thereby obtaining potassium chloride precipitate and a first mother liquor solution, (c) separating the potassium chloride precipitate from the first mother liquor solution, (d) processing the potassium chloride precipitate to obtain an aqueous potassium hydroxide-containing solution, (e) adding the aqueous potassium hydroxide-containing solution to the separated first mother liquor solution, thereby obtaining a potassium hydroxide-enriched first mother liquor solution, and (f) selectively precipitating lithium hydroxide monohydrate from the potassium hydroxide-enriched first mother liquor solution, thereby obtaining lithium hydroxide monohydrate precipitate and a second mother liquor solution.

The invention relates to a system and a method for extracting liquid calcium chloride, sodium chloride and potassium chloride from fly ash, and belongs to the technical field of resource utilization of household garbage incineration fly ash. The system comprises a washing unit, a filtrate treatment unit and a salt separation and purification unit. The method comprises the following steps: carrying out four-stage countercurrent washing of water washing, acid pickling, water washing and water washing on the fly ash, and carrying out deep dechlorination to produce qualified ash residues; performing impurity removal and nanofiltration on high-salt filtrate discharged by primary water washing, and reusing concentrated liquor for acid washing; carrying out impurity removal and nanofiltration on high-calcium filtrate discharged by secondary pickling, and carrying out high-pressure reverse osmosis concentration on concentrated liquor to obtain a liquid calcium chloride product; and evaporating the nanofiltration produced water to produce sodium chloride and potassium chloride. According to the method, evaporation-free production of the calcium chloride liquid is realized through coupling of circulating pickling and membrane separation concentration technologies, sodium chloride and potassium chloride are synchronously produced, and the method has the advantages of high resource product value, low energy consumption and remarkable ash residue reduction effect.

Eutectoid salt hydrate phase change material compositions for thermal energy storage are disclosed. A congruently melting, form-stabilized, homogenous salt hydrate phase change material includes both attapulgite clay and sodium polyacrylate, where the attapulgite clay functions as both a thixotropic dispersant during the mixing of the salt hydrate, and thereafter in concert with sodium polyacrylate in forming a permanent stabilizing matrix. In addition, in one preferred embodiment, a eutectoid salt hydrate is disclosed which changes phase between 11 degrees C. and 16 degrees C. and whose composition is one mol sodium sulfate decahydrate to 0.5 mols ammonium chloride to 0.22 moles potassium chloride. In a second preferred embodiment, a eutectoid salt hydrate is disclosed that changes phase between 8 degrees C. and 13 degrees C. and whose composition is one mol sodium sulfate decahydrate to 0.65 mols ammonium chloride to 0.22 mols potassium chloride.

The invention provides a multi-effect integrated potassium hydroxide ionic membrane process production system, relates to the technical field of potassium hydroxide industrial production, and realizes efficient and green production through synergistic operation of salt refining, electrolysis, gas treatment, resource recovery and other units. The method comprises the following steps: dissolving a raw material potassium chloride in a salt dissolving tank, sequentially adding KOH, FeCl3 and K2CO3 into a baffling tank, carrying out chemical refining, removing organic matters and calcium and magnesium ions, carrying out three-stage cross-flow filtration by a membrane filter and carrying out advanced treatment by an ion exchange resin tower to prepare high-purity primary brine, and carrying out an electrolysis process. Chlorine generated by an anode of the electrolytic tank is subjected to multi-stage washing, cooling and drying, then is pressurized and sent to an acid making unit, and light salt brine generated by electrolysis is subjected to chlorate decomposition and vacuum dechlorination processes, so that efficient removal of free chlorine and recovery of chlorine are realized. The system ensures the production stability and safety through gradient utilization of heat energy, closed-loop circulation of water resources and automatic control, and has economic and environment-friendly benefits.

The present invention relates to the technical field of potassium chloride packaging, and more specifically to a composite film for packaging potassium chloride granules and a method for preparing the composite film. The composite film preparation method comprises: preparing a solution containing gelatin powder, konjac flour, glycerin, and hydroxyapatite powder; after fully dissolving the solution, treating the solution in a water bath at approximately 100°C for 15 minutes; transferring the solution to a culture dish and baking the solution at 40-60°C for 24-48 hours; and peeling the composite film from the culture dish. The composite film prepared by the present invention utilizes gelatin and konjac flour as primary raw materials during the preparation process, and while having a certain degree of air permeability, its water vapor transmission rate is relatively low. This is likely because the gelatin and konjac flour form a dense membrane structure, while the hydroxyapatite added thereto has a high water absorption capacity, effectively absorbing water and preventing moisture from entering and permeating the membrane, thereby preventing the potassium chloride granules from clumping.

This invention discloses a culture medium for the mass sporulation of *Substantia macrantha* and its application. The culture medium comprises the following components: lactose 21-23 g / L, yeast extract 14-16 g / L, potassium chloride 0.4-0.6 g / L, magnesium sulfate 0.4-0.6 g / L, potassium dihydrogen phosphate 0.4-0.6 g / L, disodium hydrogen phosphate 0.55-0.75 g / L, sodium molybdate dihydrate 5-7 mg / L, vitamin B6 50-60 mg / L, arginine 20-30 mg / L, and agar 18-22 g / L, diluted to volume with double-distilled water, with a natural pH. Using the culture medium prepared according to this invention to culture *Substantia macrantha* significantly increases the spore yield (164-fold), reaching 2.21 × 10⁻⁶. 8 conidia / cm 2 This provides a reference for the mass production of the fungal spores.

The application discloses a kind of potassium-doped chain-like trimanganese tetroxide positive electrode materials and its preparation method and application, belong to the field of aqueous zinc-ion battery, preparation method includes: configuration isopropanol and deionized water mixed solution with a portion of.In magnetic stirring, manganese acetate, potassium chloride and nitrilotriacetic acid are dissolved into mixed solution, K-Mn-NTA, i.e.K-Mn-NCs precursor is prepared by hydrothermal method;Afterwards, K-Mn3O4-NCs is prepared by annealing method;Finally, polyaniline is in-situ polymerized on K-Mn3O4-NCs to obtain K-Mn3O4-NCs@PANI;The positive electrode material of the application is applied to zinc-ion battery, can improve the cycle performance and rate capability of zinc-ion battery, improve the conductivity of positive electrode material while inhibiting the dissolution of Mn, improve the electrochemical performance of zinc-ion battery.

The invention relates to a method for recovering a potassium resource from high-boron underground brine. The method comprises the following steps: (1) pretreatment; (2) separating sodium and potassium; (3) separating potassium and boron; and (4) preparing potassium chloride. The potassium chloride product is prepared by controlling the potassium separation concentration and recrystallizing, so that the potassium resource in the high-boron underground brine can be effectively recovered, and the agricultural potassium chloride product is prepared. According to the method, the potassium resource in the high-boron underground brine can be recycled, and a potassium chloride product is prepared; the method is simple and convenient in process, high in operability and easy to realize industrial production.

The invention discloses equipment and a method for producing a potassium chloride reverse flotation reagent by adopting a granular copper-nickel catalyst, and relates to the technical field of salt lake chemical engineering. The equipment comprises a reaction kettle, a stirring shaft, a stirring paddle, a stirring basket, an upper stirring paddle, a lower stirring paddle and the like; on the basis of a powder catalyst, macroporous pseudo-boehmite and an acid solution are added, the powder catalyst is prepared into particles, and the particle type catalyst is matched with special production equipment to be used for producing the potassium chloride reverse flotation reagent. Compared with the prior art, the invention has the beneficial effects that the granular catalyst is combined with the special production equipment provided by the invention, the technical effect equivalent to the activity of a powder catalyst can be realized, the content of the target product is 85% or above, the highest content reaches 93.07%, the content of copper and nickel in the product is 10 ppm or below, the harm to salt pan brine is greatly reduced, and the production cost is reduced. The problem that flotation reagents and catalysts are difficult to separate which puzzles enterprises for many years is solved.

The invention relates to the technical field of metal stators, and provides a carbonitriding process of a metal stator for a screw drill, which comprises the following steps: preheating the metal stator, and then carrying out salt bath carbonitriding and salt bath oxidation treatment to obtain the metal stator for the screw drill; during salt bath carbonitriding, a carbonitriding agent comprises the following components in parts by weight: 24 parts of a composite carbon material, 10-15 parts of ammonium chloride, 4-8 parts of urea, 3-6 parts of yttrium oxide, 4-8 parts of potassium ferrocyanide and 10-15 parts of potassium chloride; raw materials of the composite carbon material comprise charcoal, carbon nanotubes and light calcium carbonate. According to the technical scheme, the problem that a metal stator is poor in wear resistance in the prior art is solved.