31 results about "Pickling Agents" patented technology

The invention belongs to the field of chemical materials, and particularly relates to a method for preparing high-purity silicon dioxide from fluorine-containing silicon slag. The method comprises the following steps: carrying out first washing and first filtering on the fluorine-containing silicon slag to obtain a first washing object; pickling the first washing object by adopting a pickling agent to obtain a pickled object; carrying out second washing and second filtering on the acid pickling substance to obtain a second washing substance; and burning the second washings to obtain the high-purity silicon dioxide. According to the method, the fluorine-containing silicon slag is used for preparing the high-purity silicon dioxide, the waste fluorine-containing silicon slag is comprehensively utilized, dependence on natural silicon ore is reduced, and the method has the advantages that environmental pollution is reduced, and the purity of the obtained silicon dioxide is high. The method provided by the invention almost only adopts steps based on physical reaction, is simple and convenient to operate, does not need special equipment, is low in cost, is green and environment-friendly, and has important value in industrial production of high-purity silicon dioxide.

The invention discloses a preparation method of a nitrogen-doped coal-based carbon material for methane enrichment, and belongs to the technical field of carbon materials for gas separation. The method comprises the following steps: carrying out controlled change on a coal structure through pretreatment of composite organic acid, mixing biomass waste as a nitrogen source with pretreated coal, and carrying out pyrolysis to obtain a nitrogen-doped coal-based crude product; and mixing the nitrogen-doped coal-based crude product with an activating agent, and activating in a nitrogen atmosphere to obtain the nitrogen-doped coal-based carbon material. Through pretreatment, chemical bonds in organic macromolecules in the coal are broken, the pore structure of the coal is improved, and the carbon element is enriched; the composite organic acid is used as a pickling agent, the biomass waste is used as a nitrogen source for nitrogen doping, use of a traditional high-energy-consumption chemical nitrogen source is reduced, pretreated coal and the nitrogen source are co-pyrolyzed to provide more micropores and channels for the carbon material, and the adsorption performance of the carbon material is obviously improved; the preparation process is simple and effective, and green preparation of the nitrogen-doped coal-based carbon material is realized.

The invention provides a composite thickening agent capable of being used for a quaternary ammonium salt system in a weak acid environment, and belongs to the field of thickening agents. The formula comprises cationic guar gum, silicone oil, cationic cellulose and a zwitterionic buffer agent. Through charge synergy of the cationic guar gum and the ester quaternary ammonium salt, network strengthening of the cationic cellulose and pH stability of the zwitterionic buffering agent, the problems of thickening of an organic acid pickling agent containing the quaternary ammonium salt in a weak acid system and compatibility of the organic acid pickling agent containing the quaternary ammonium salt and a quaternary ammonium salt bactericide are solved.

The invention discloses a pickling agent and application thereof, and relates to the technical field of corrosion inhibitors. According to the pickling agent provided by the invention, the nicotinoyl methionine is applied to the hydrochloric acid, the nicotinoyl methionine is used as an adsorption type corrosion inhibitor, and the nicotinoyl methionine can quickly form a film on the surface of the steel in the process of pickling the steel by the hydrochloric acid, so that corrosive substances such as H2O, H3O < + >, Cl <-> and the like in an acidic medium are prevented from being diffused on the surface of the steel, and the corrosion inhibition effect is achieved. After the nicotinoylmethionine is added into a hydrochloric acid medium as the corrosion inhibitor, the corrosion rate of the pickling agent on the surface of the steel is remarkably reduced, the corrosion inhibition performance is remarkably improved, the corrosion rate of the pickling agent on the surface of the steel at normal temperature can be reduced to 1.654 g.m <-2 > h <-1 > or below, and the corrosion inhibition rate can be improved to 92.99% or above.

The invention discloses a processing technology for low-salt quick-cooking softening of salted duck eggs, and belongs to the technical field of salted duck egg preparation, and the processing technology comprises the following steps: removing surface dirt from fresh duck eggs through automatic cleaning equipment, drying to remove moisture, and electronically grading for later use; mixing table salt and water according to a certain proportion to obtain a low-salt pickling agent; putting the cleaned duck eggs into a low-salt pickling agent, externally connecting a water bath device to keep the temperature of the pickling solution, and completely pickling to obtain a salted duck egg semi-finished product; putting the salted duck egg semi-finished product into a sealing bag through a vacuum packaging machine, and extracting air in the bag to isolate the salted duck egg from the outside; the packaged salted duck eggs are cooked with steam and then taken out to be cooled, and the finished salted duck eggs are obtained.According to the technology, the salting solution only containing salt is utilized, the salt content in the salting agent is reduced, the salting time is further shortened, the salinity of the product is greatly reduced, the texture of the product is softened, and the taste and flavor of the product are effectively improved; the green and healthy diet concept of consumers is particularly met.

The invention discloses a sea-buckthorn preserved egg pickling agent and a pickling method, and relates to the field of preserved egg processing. The invention relates to a sea buckthorn black tea beverage, which is prepared from the following components in parts by weight: 1.0 to 1.2 parts of sea buckthorn flavone extract, 4.2 to 4.8 parts of food-grade sodium hydroxide, 3.8 to 4.0 parts of edible salt, 0.7 to 0.8 part of dynamic response type composite gel, 1.1 to 1.3 parts of high-thearubigin black tea extract, 0.3 to 0.5 part of citric acid-sodium citrate buffer pair, 0.5 to 0.6 part of herba portulacae extract and the balance of deionized water. Functional components such as the sea buckthorn flavone extract and the like are combined with the pH sensitive characteristic of the dynamic response type composite gel, so that the problem that the functional components are easy to inactivate in a strong alkali pickling environment is effectively solved, the retention rate of active components such as sea buckthorn flavone and the like is remarkably increased, the total number of bacterial colonies is reduced, the dealkalization time is shortened, and the dealkalization efficiency is improved. And the product safety and the storage stability are improved.

The utility model discloses an oil-rich coal in-situ pyrolysis well wall decontamination device, which relates to the field of geological exploration and development and comprises a ground support system, an in-well auxiliary support mechanism and automatic control equipment. The in-well auxiliary supporting mechanism comprises a dirt separator rod, a power assisting cylinder, a connecting point, an upper supporting rod, a scraping plate, a lower supporting rod, a heater and a scraping and brushing cylinder, the dirt separator rod is arranged at the bottom of the derrick, the power assisting cylinder and the scraping and brushing cylinder are arranged outside the dirt separator rod, and a cable and a water pipe of the heater are both arranged in the dirt separator rod; the scraping and brushing cylinder is located below the power assisting cylinder, a plurality of upper supporting rods are arranged outside the power assisting cylinder, the dirt removing device solves the problem that oil dirt is attached to the wall in a mechanical dirt removing mode, no pickling agent is added, no new pollution is added, water vapor is sprayed to the two sides of the scraping plate through vapor spraying openings, the oil dirt on the well wall is activated, the fluidity of the oil dirt is improved, and the removing difficulty is reduced.

The invention relates to the field of maintenance and cleaning of industrial cooling equipment, and particularly discloses a cleaning agent and a cleaning method for a coil pipe of an iron phosphate cooling tower. The iron phosphate cooling tower coil cleaning agent comprises a wetting agent, a pickling agent, a protective agent and a neutralizer which are separately stored, the wetting agent comprises the following components in percentage by mass: 1-3% of a surfactant, 3-5% of a reducing agent and the balance of water; the pickling agent is prepared from the following components in percentage by mass: 15 to 30 percent of sulfamic acid, 15 to 40 percent of citric acid, 5 to 15 percent of ester-based poly-alpha olefin, 0.5 to 1.5 percent of hydrolysis inhibitor and the balance of water; the protective agent consists of the following components in percentage by mass: 30-70% of a corrosion inhibitor, 30-70% of a chelating agent and the balance of water, the neutralizer consists of the following components in percentage by mass: 20-50% of alkali and 50-80% of water; the mass ratio of the wetting agent to the pickling agent to the protective agent to the neutralizer is (1-3): (2.5-5): (0.25-0.5): (0.5-1). The cleaning agent can ensure the low corrosion rate of cooling tower coil materials, is high in cleaning speed, can reduce shutdown loss, and meets the special requirements of an iron phosphate production line.

The utility model provides an anti-splashing vacuum tumbling machine and belongs to the technical field of tumbling machines. Comprising a mounting frame, a mounting plate is fixed to one end of the mounting frame, a supporting rod is arranged at the top of the mounting frame in a protruding mode, a bearing wheel is rotationally arranged on the supporting rod, a tumbling cylinder is rotationally embedded in the mounting plate, a guide roller path is fixedly arranged on the outer edge of the tumbling cylinder in a sleeving mode, and a sliding way for the bearing wheel to slide is formed in the guide roller path. A tumbling cavity is formed in the tumbling cylinder, an extension rod is horizontally fixed in the tumbling cavity, a transmission rod is rotatably arranged in the extension rod, a transmission assembly is mounted on the extension rod, a rotating motor for driving the tumbling cylinder and the transmission rod to rotate is mounted on the mounting plate, a transmission cavity is formed in the mounting plate, and the transmission assembly is mounted on the transmission rod. And a transmission part for driving the tumbling cylinder and the transmission rod to transmit is arranged in the transmission cavity. According to the utility model, the conditions of insufficient pickling of the pickling agent and the like are avoided as much as possible through the rolling and kneading cylinder and knocking and kneading.

The invention belongs to the technical field of metal cleaning, and particularly relates to a metal pickling agent and a preparation method and application thereof. The metal pickling agent comprises an acid solution, a corrosion inhibitor, a surfactant, an antioxidant and a complexing agent. According to the metal pickling agent, a complete oxidation film can be formed on the surface of a copper material during pickling, the copper material cannot be corroded and discolored under the condition that the surface of the copper material is acid for 30 min, and the requirement of automatic production can be met. After pickling treatment with a metal pickling agent and rinsing cleaning, a formed oxidation film uniformly covers the surface of a workpiece, the texture form is uniform, it can be ensured that the copper material is not corroded or discolored after being naturally stored for at least 3 days, and good oxidation resistance is achieved. Meanwhile, the uniform oxidation film can provide certain lubricity and reduce friction force, the subsequent extrusion or drawing process is facilitated, cracks and mottles are prevented from being generated on the surface of a product, and it is ensured that the workpiece cannot be corroded and discolored before extrusion or drawing.

The invention provides a production process of low-salt low-sugar sausages, and belongs to the technical field of sausage production, and the production process comprises the following steps: processing raw material meat, putting the processed raw material meat into a meat cutting mechanism of sausage production equipment, cutting the raw material meat into strip-shaped meat blocks, and conveying the strip-shaped meat blocks to a meat mincing mechanism to prepare meat paste; a low-salt and low-sugar pickling agent is weighed according to the mass percentage of the raw material meat, the low-salt and low-sugar pickling agent comprises 0.8%-1.2% of salt, 0.3%-0.5% of white granulated sugar, 1%-3% of compound spices, 0.5%-1% of plant extracts and the balance drinking water, the salt and the white granulated sugar are dissolved in the drinking water, then the compound spices and the plant extracts are added, and stirring is conducted to prepare the pickling agent; conveying the meat paste to a pickling mechanism, stirring into mixed meat paste, and pickling at low temperature to obtain pickled meat paste; filling the pickled meat paste into a casing to prepare a sausage blank; hanging the sausage blank in a smoking box, and smoking to prepare the low-salt low-sugar sausage; materials do not need to be transferred among different devices, interference of the external environment on quality is reduced, and the problem that manual material transferring in a traditional process is prone to being affected by the outside is solved.

The application relates to a resource utilization method of lithium-containing waste aluminum electrolyte, which comprises the following steps: mixing lithium-containing waste aluminum electrolyte powder to be treated with a dissolving solution, stirring and dissolving, then performing solid-liquid separation to obtain filter residue A and filter liquor B; mixing the filter residue A with water and an additive, then performing reaction and solid-liquid separation to obtain filter residue E and filter liquor F; using the filter liquor B for lithium precipitation to obtain a lithium salt; mixing the filter residue E with an acid pickling agent, stirring and reacting, then performing solid-liquid separation when the pH value of the reaction system is 4.0-6.5 to obtain a fluorite product and acid pickling liquor H; or adding crystal seeds into the filter liquor F, stirring and reacting, then standing, performing solid-liquid separation to obtain an aluminum hydroxide product and solution G; and then returning the acid pickling liquor H and the solution G to construct the dissolving solution. The process flow is short, the lithium-containing waste aluminum electrolyte can be fully utilized, the method is green and efficient, closed-loop treatment is achieved, the treatment cost is low, and the method has extremely high economic value.

The invention relates to the technical field of metal surface treatment, in particular to an environment-friendly pickling passivation paste spraying preparation. The cleaning agent comprises the following components in percentage by weight: 10%-30% of an environment-friendly pickling agent, 5%-20% of a composite passivating agent, 2%-10% of a thixotropic thickening system, 0.5%-4% of a surfactant, 0.2%-3% of a corrosion inhibitor, 1%-8% of a coalescing agent and the balance of deionized water, wherein the thixotropic thickening system is formed by compounding an organic thickening agent and an inorganic rheological additive according to the weight ratio of (1: 1)-(4: 1), the environment-friendly pickling agent is used for replacing strong-corrosivity inorganic acid, the rheological characteristic that the viscosity is rapidly recovered after spraying is achieved in combination with the thixotropic thickening system, the environment-friendly requirement is met, and the mechanical spraying technology is also adapted; the method has the advantages of avoiding environmental pollution and improving the construction efficiency and the passivation film quality.

The invention relates to the technical field of boiler cleaning and discloses a boiler chemical cleaning and maintaining device and a using method thereof.The boiler chemical cleaning and maintaining device comprises a boiler and a control valve II communicating with the boiler through a pipeline, the control valve II communicates with a water pump I through a pipeline, and the water pump I communicates with a three-way valve through a pipeline; the three-way valve is respectively communicated with the saline water tank and the pickling agent tank through pipelines, and water scale in the boiler is softened by saline water, so that the cleaning effect of the pickling agent is enhanced. According to the equipment, the strength and compactness of scale are greatly reduced through dual pretreatment of salt water softening pretreatment and penetrating agent deep permeation, salt water enables crystal lattices of the scale to be relaxed through osmotic pressure and ion exchange, the penetrating agent penetrates into a scale layer through micro cracks generated by temperature difference circulation and negative pressure suction, and optimal reaction conditions are created for follow-up acid pickling.

The invention discloses a preparation method of modified pyrolysis carbon black and a method for reinforcing natural rubber by using the modified pyrolysis carbon black, and belongs to the technical field of resource recycling. The preparation method of the modified cracked carbon black comprises the following steps: putting cracked carbon black into a liquid-phase dispersion system containing a pickling agent, an oxidizing agent and a surfactant for pretreatment to obtain silicon-containing activated carbon black, and adding an acylating chlorination reagent and a catalyst I for reaction to obtain acylating chlorination carbon black; and adding a cystamine coupling agent to modify the surface of the acylating chlorination carbon black to obtain the modified cracked carbon black. The method for reinforcing the natural rubber comprises the following steps: banburying the natural rubber, adding the cystamine grafted carbon black, the anti-aging agent, the zinc oxide and the stearic acid, and mixing; and then adding the sulfur and the accelerant for open milling. According to the method, the reinforcing performance of the cracked carbon black in a rubber material is remarkably improved and reaches or is close to the commercial carbon black level, and an efficient and feasible technical path is provided for high value-added utilization of the cracked carbon black of the waste tire.

According to the technical scheme, the metal surface pickling agent production quality inspection sampling device comprises an equipment table and a sampling box, the sampling box is installed at the top of the equipment table, a rotating seat is installed at the position, located at the bottom in the sampling box, of the top of the equipment table, and a collecting tank is clamped to the position, close to the outer surface, of the top of the rotating seat through a clamping groove. A waste tank is clamped in a gap of the collecting tank at the top of the rotating seat through a clamping groove, a graduator is mounted at the bottom of the equipment table at the bottom of the rotating seat, an electric expansion piece is mounted on one side of the top of the sampling box, and a connecting plate is mounted on an output shaft of the electric expansion piece. The sampling device for the production quality inspection of the metal surface pickling agent solves the problems that the existing sampling equipment for pickling agent quality inspection cannot clean the residual pickling agent in a sampling tube during continuous sampling, and the residual pickling agent easily affects the quality inspection accuracy of the pickling agent, and improves the sampling purity of the pickling agent; therefore, the quality inspection accuracy of the pickling agent is ensured.

The invention discloses a cleaning agent and a cleaning method for a water-cooled electromagnet of a particle accelerator, and belongs to the technical field of maintenance and treatment of water-cooled electromagnets. The cleaning agent comprises a special pickling agent and a special passivating agent; the special pickling agent is prepared from components in percentage by mass as follows: 0.1%-0.5% of a nitric acid pickling corrosion inhibitor, 3%-4% of sulfamic acid, 0.1%-0.8% of sodium fluoride, 0.001%-0.003% of a surfactant, 0.5%-2.5% of citric acid and the balance of water, the special passivating agent is prepared from the following components in percentage by mass: 0.02 to 0.1 percent of acetoxime, 0.03 to 0.1 percent of benzotriazole, 0.001 to 0.003 percent of a de-foaming agent and the balance of water. The particle accelerator water-cooled electromagnet cleaned by the cleaning agent provided by the invention and a specific cleaning method meets the use requirements, reaches an ideal level, and can ensure normal operation of the accelerator.

The invention relates to a method for eliminating surface plaque defects of a medium-high carbon steel pickling plate, and belongs to the technical field of medium-high carbon steel pickling surface quality control. The method comprises the following steps: obtaining a steel billet with set chemical components, wherein the set chemical components comprise C, Si, Mn, Al, Ni, Cr, Mo and Fe; wherein in percentage by mass, the total content of Ni and Cr is 0.15%-0.5%, and the content of Mo is 0.2%-0.4%; the steel billet is heated in a furnace, and the tapping temperature of heating in the furnace is controlled; performing rough rolling on the heated steel billet to obtain an intermediate billet; carrying out first cooling on the intermediate blank; sequentially carrying out finish rolling, laminar cooling and coiling on the intermediate billet subjected to the first cooling to obtain a hot-rolled coil; pickling the hot-rolled coil to obtain a medium-high carbon steel pickled plate; wherein a washing agent for pickling comprises an inhibitor. According to the embodiment, the surface plaque defect of the medium-high carbon steel pickling plate is eliminated.

The invention discloses a method for preparing lithium carbonate by extracting lithium from oil and gas field produced water, which comprises the following steps: pretreating oil and gas field produced water, and precipitating, filtering and concentrating the pretreated oil and gas field produced water to obtain concentrated oil and gas field produced water; extracting the concentrated oil and gas field produced water and the saponified organic phase to obtain a lithium-loaded organic phase and a raffinate water phase; carrying out acid pickling on the lithium-loaded organic phase and an acid pickling agent to obtain an acid-pickled organic phase and an impurity-containing aqueous solution; the acid pickling organic phase and a back extraction agent are subjected to back extraction, and a lithium-rich solution and a back extraction organic phase are obtained; and precipitating, filtering and drying the lithium-rich solution to obtain lithium carbonate. The method for preparing the lithium carbonate by extracting the lithium from the oil and gas field produced water is suitable for preparing the lithium carbonate by directly extracting the lithium from the oil and gas field produced water which is high in magnesium content, low in lithium content, high in mineralization degree and high in oil content.

The present invention discloses a nickel-plated layer non-corrosive copper alloy pickling agent and its application. It includes a cationic emulsifier and a corrosion inhibitor. The nickel-plated layer non-corrosive copper alloy pickling agent of the present invention can effectively remove the oxide film on the surface of copper metal, restore the bright appearance of copper metal, and will not cause corrosion and discoloration to the copper nickel-plated layer, improve product quality and production efficiency, effectively solve the problem of precipitation of the corrosion inhibitor under acidic conditions, and improve the stability and service life of the pickling agent.

The invention belongs to the technical field of corrosion prevention of intercooling circulating water in a thermal power plant, and relates to a pickling and surface protection treatment method for a carbon steel pipeline of an intercooling circulating water system. Comprising the steps that solid impurities in a pipeline are swept and removed through cooperation of manpower and machinery, a detachable isolation device is arranged to isolate a heat dissipation unit from a circulating pipeline, and meanwhile a cold water ring pipe and a hot water ring pipe are connected to form an independent circulating loop; industrial water is used for flushing through a circulation loop until system effluent is clear and pH is neutral; a corrosion inhibitor and a pickling agent are sequentially added into the flushed system for circulating cleaning; washing the loop by using demineralized water until the quality of discharged water reaches the discharge standard; a pre-filming agent is injected into the system for circular treatment, and after pre-filming is completed, a loop is washed with demineralized water, and the metal corrosion rate is measured; and when the corrosion rate is smaller than or equal to 0.075 mm / a, acceptance check is completed. Through the synergistic effect of the three-stage process of pipeline cleaning, circulating pickling and surface pre-filming, deep cleaning and long-acting protection of a pipeline system are achieved.

The application discloses a high-performance cattle crust production process based on salt-free pickling and high-pH value chrome tanning, and is characterized in that the process comprises the following steps in sequence: water washing of yellow cattle softened pelt, salt-free pickling, chrome tanning, alkali extraction, water washing out of drum, standing, water squeezing, shaving, weighing, softening rinsing, water washing, chrome-zirconium combined retanning, neutralization, water washing, filling, fatting, surface treatment, water washing out of drum, standing and drying finishing; aromatic sulfonic acid or aromatic sulfonic acid oligomer is selected as a pickling agent in the salt-free pickling process; at least chlorosulfonated paraffin fatting agent, modified glutaraldehyde, chrome tanning agent, zirconium tanning agent, amphoteric aromatic sulfonic acid condensate and natural protein filler are added in the chrome-zirconium combined retanning process; the production process disclosed by the application can effectively solve the problems of chloride ion and chrome pollution caused by traditional pickling-chrome tanning technology, and simultaneously provides a wet-state dyeing and finishing process technology for transforming blue wet leather into crust leather without reducing the physical and mechanical strength of the blue wet leather.

The utility model discloses a pickling device for steel, including base, the top of base is installed with pickling tank, the one side of pickling tank forms the bottom groove of downward extension, the bottom of bottom groove is installed with the oscillator, the one side of bottom groove is provided with the storage box for depositing pickling agent, the bottom of one side of storage box is provided with the liquid outlet pipe, the top of storage box is provided with the cover, and the top one side of storage box has the storage groove. The utility model provides a pickling device for steel, and pickling tank is supported through setting base, and the bottom groove of pickling tank one side extension cooperates oscillator, prevents the impurity after cleaning from adhering again on steel, and storage box is used for depositing pickling agent in bulk, and the liquid outlet pipe is convenient for pickling agent and is guided into pickling tank, realizes the convenient supply of pickling agent, and the cover can reduce the volatilization or pollution of pickling agent in storage box, and the storage groove can be used for placing the tool or small -size accessories required for pickling, and the operation convenience is improved.

The invention discloses a composite pickling agent and a method for pickling salted preserved eggs at a constant temperature, and relates to the field of food processing, the composite pickling agent is prepared from the following raw materials in parts by weight: 1.5-2.5 parts of dietary alkali, 18-22 parts of edible salt, 90-110 parts of water and 0.5-5 parts of optional five spices, according to the composite pickling agent and the method for pickling the salted preserved eggs at the constant temperature by using the composite pickling agent, the pickling period of more than 30 days in the traditional process is shortened to 8-15 days through the cooperation of a specific alkali-salt ratio and a constant-temperature condition, so that the production efficiency is greatly improved.

The application provides a sample preparation method and an analysis test method of a cobalt-iron-boron alloy. The sample preparation method comprises the following steps: performing acid pickling on the cobalt-iron-boron alloy for at least two times, and then performing cleaning and drying to obtain a sample to be tested; wherein the concentration of the acid pickling agent gradually decreases with the increase of the number of acid pickling. Through the step of acid pickling for at least two times, the pollutants on the surface of the cobalt-iron-boron alloy can be effectively removed, and the introduction of impurities is avoided as much as possible in the sample preparation process, so that a clean sample to be tested suitable for the detection of a glow discharge mass spectrometer is successfully prepared, and the test time of the glow discharge mass spectrometer can be shortened, and the test result has high accuracy.

The present invention relates to a method for purifying high-concentration iron ions in a hydrochloric acid solution. The method comprises the following steps: subjecting the hydrochloric acid solution containing the high-concentration iron ions to multi-stage extraction using an extractant, wherein the extractant is a mixture containing trioctyl phosphate; removing impurities in an iron-rich organic phase using a pickling agent to obtain a pickled organic phase; subjecting the pickled iron-rich organic phase to multi-stage stripping; and regenerating the solution after the multi-stage stripping. The method adopts a new extraction system (a mixture containing trioctyl phosphate phase) to reduce the acidity or chloride ion concentration required during extraction, thereby meeting the requirements for the hydrochloric acid solution extraction process for high-concentration iron, and making the stripping process of the iron in the loaded organic phase easier to perform. The stripping solution does not introduce new impurities, thereby achieving selective extraction of iron ions and reducing the cost of purifying, extracting, or concentrating the iron in the hydrochloric acid solution.

The invention discloses a compound bacteria fermented fruit and vegetable marinade and a preparation method thereof, and particularly relates to the technical field of fermentation engineering. The method comprises the following steps: firstly, adding a proper amount of water into raw materials rich in fermentable sugar, sulfur-containing flavored vegetables and prebiotic sources, and beating into paste to serve as fruit and vegetable-based bottom mud; inoculating lactic acid bacteria and saccharomycetes which are subjected to induction culture into the fruit and vegetable-based bottom mud, and performing aerobic fermentation and anaerobic fermentation to obtain a fermentation product; finally, adding common food additives into a fermentation product, performing low-temperature refrigeration and after-ripening, performing heat treatment at 85-95 DEG C for 15-30 seconds, killing viable bacteria, and stopping fermentation; and cooling to room temperature to obtain the compound bacteria fermented fruit and vegetable marinade. According to the method disclosed by the invention, lactic acid bacteria (lactobacillus plantarum and lactobacillus fermentum) and saccharomycetes (Wickerhamomyces anomalus) are subjected to induced culture respectively, so that the lactic acid bacteria and the saccharomycetes are subjected to adaptive pre-domestication based on interaction signals, and the ecological compatibility and metabolism synergistic efficiency of the lactic acid bacteria and the saccharomycetes in a co-fermentation system are remarkably improved.

The invention provides Orleans-flavor recombined chicken cutlet and a preparation method thereof, and belongs to the technical field of production and processing of prefabricated chicken cutlet products. The invention provides a pickling agent for preparing Orleans-flavor recombined chicken cutlets. The pickling agent comprises a pickling material 1 and a pickling material 2, the pickling material 1 comprises D-sodium erythorbate, table salt, composite phosphate and Orleans pickling material; and the pickling material 2 comprises acetylated distarch phosphate and TG enzyme. According to the pickling agent provided by the invention, acetylated distarch phosphate and TG enzyme are added as adhesives to well bond minced meat so as to prevent subsequently processed chicken from scattering and falling off, and seasoning and Orleans pickling materials are added to reduce the cooking loss of the recombined chicken cutlet, improve the water-holding capacity and improve the color, flavor and taste of the recombined chicken cutlet; the Orleans flavor recombined chicken cutlet with good adhesiveness and chewiness and excellent color and flavor can be prepared.

The invention discloses a pickled vegetable and pickled vegetable holding agent with nutritional and health-care functions and a process method. The pickled vegetable holding agent comprises an old saline water (powder) pickling agent and a pickled vegetable holding agent. The old brine (powder) vegetable pickling agent is prepared from sea salt, apple juice, pear juice, Chinese cabbage juice, radish juice, white granulated sugar, rock candy, yeast extract, D-sodium ascorbate, potassium cinnamate, curcumin and corn starch according to specific parts by mass. The pickle holding agent for pickles is composed of 58-62% of L-lactic acid powder (containing 35-40% of L-calcium lactate), malic acid, citric acid, disodium succinate, sodium glutamate, tartaric acid, lemon yellow, sodium benzoate and dry old brine powder. The invention relates to the technical field of food processing, in particular to a pickled vegetable holding agent with nutrition and health care functions for pickled vegetables and a technological method.By means of the scheme, the nutrition and health care value and flavor stability of pickled products can be improved, the shelf life is prolonged, the defects of traditional pickled vegetables in the aspects of nutrition, flavor and preservation are overcome, and the market competitiveness of the pickled vegetables is improved. The method has good innovativeness.