36 results about "Salicylhydroxamic acid" patented technology

The invention discloses a method for flotation separation of iron oxide ore in cassiterite sulphide slime ore by using a combined inhibitor. The combined inhibitor is composed of sodium carbonate andsodium tripolyphosphate. The operation of flotation separation of the iron oxide ore in the cassiterite sulphide ore slime ore comprises the following steps: roughing, scavenging and concentrating thecassiterite sulphide ore in sequence; in the roughing process, a sodium carbonate solution is firstly used for adjusting the pH of ore pulp to be 6-8, then a sodium tripolyphosphate solution, a collecting agent salicylhydroxamic acid and an auxiliary collecting agent P86 are added, and cassiterite and iron oxide minerals are separated through roughing, scavenging and concentration. The combined inhibitor has the advantages of being high in selectivity, soluble at normal temperature, non-toxic, harmless, low in dosage, easy in concentrate treatment and the like and can realize effective separation of cassiterite and iron oxide minerals and further improves the quality of tin concentrate.

The invention discloses a color-protecting and fresh-keeping method capable of restraining potatoes from sprouting and reducing solanine, and belongs to the field of fresh keeping of foods. According to the method disclosed by the invention, chlorine dioxide is used for cleaning, and salicylhydroxamic acid is used for soaking, so that the effect of sprouting inhibition is achieved. A crisp-keeping agent and a color fixative are used for treatment, a mixed solution of rice vinegar and sodium metabisulfite is used for suffocating, the acidity of the vinegar is used for decomposing the solanine, Na2S2O5 is used for reducing the activity of polyphenol oxidase (PPO) and peroxidase (POD), and finally, aluminum foil bags are used for vacuum packing, so that the purposes of color protection and fresh keeping are achieved. According to the method, potatoes can have long shelf life and good storage adaptability.

The invention relates to an improved production method for salicylhydroxamic acid. The method is characterized in that a metered hydroxylamine solution is added into a reaction vessel; the PH value ofThe invention relates to an improved production method for salicylhydroxamic acid. The method is characterized in that a metered hydroxylamine solution is added into a reaction vessel; the PH value of a reaction system is adjusted around 12.0 by a strong alkali solution; the reaction system is heated to a temperature of between 33 and 38 DEG C, added with an emulsifier and dripped with a stock sola reaction system is adjusted around 12.0 by a strong alkali solution; the reaction system is heated to a temperature of between 33 and 38 DEG C, added with an emulsifier and dripped with a stock solution of menthyl salicylate and a strong alkali solution; the PH of the reaction system is always stabilized around 12.0; after solid in the solution is dissolved, the solution is kept at the temperatution of menthyl salicylate and a strong alkali solution; the PH of the reaction system is always stabilized around 12.0; after solid in the solution is dissolved, the solution is kept at the temperature and performs arrest reaction; subsequently, the PH is adjusted to be between 4.0 and 5.0 by using acid; and the solution is aged at the temperature of between 20 and 30 DEG C and filtered to obtaiure and performs arrest reaction; subsequently, the PH is adjusted to be between 4.0 and 5.0 by using acid; and the solution is aged at the temperature of between 20 and 30 DEG C and filtered to obtain salicylhydroxamic acid solid. As the method reduces the using level of hydroxylamine, alkali and the acid in the process of acidification simultaneously, the method improves the yield of the salicyln salicylhydroxamic acid solid. As the method reduces the using level of hydroxylamine, alkali and the acid in the process of acidification simultaneously, the method improves the yield of the salicylhydroxamic acid and effectively reduces the discharge amount of methanol, thereby reducing environmental pollution.hydroxamic acid and effectively reduces the discharge amount of methanol, thereby reducing environmental pollution.

The invention discloses a tin concentrate separating system and a tin concentrate separating process. The tin concentrate separating system comprises a first floating tank, a second floating tank, a first rotary kiln, a second rotary kiln and an electric furnace; the electric furnace is provided with a material mixture inlet; the material mixture inlet is connected with a material mixing tank; a tin concentrate pulp inlet, and a styryl phosphonic acid, phenylprohydroxoxime acid and foaming agent No.2 oil inlet are formed in the first floating tank; a first floated concentrate outlet and a first floated tailing outlet are also formed in the first floating tank, and are respectively connected to the first rotary kiln and the material mixing tank; a first floated tailing pulp inlet and a salicylhydroxamic acid and foaming agent No.2 oil inlet are formed in the second floating tank; a second floated concentrated outlet and a second floated tailing outlet are also formed in the second floating tank, and are respectively connected to the second rotary kiln and the material mixing tank. The separating system disclosed by the invention is simple in structure; by utilizing the separating system, arsenic and sulphur can be effectively reduced; moreover, the tin loss in a separating process is reduced; the economic benefit is high.

The invention discloses a collecting agent for sorting zinc oxide ore. The collecting agent is mainly prepared by the following raw materials in parts by weight: 50 to 100 parts of isobutanol, 50 to 120 parts of sodium hydroxide, 60 to 120 parts of carbon disulfide, 10 to 200 parts of 1-amino-n-heptane, 50 to 100 parts of glycerol, 50 to 120 parts of salicylhydroxamic acid, 10 to 30 parts of sodium carbonate, 20 to 100 parts of sodium sulfide, 50 to 150 parts of water glass solution and 10 to 40 parts of kerosene. In addition, the invention also discloses a preparation method of the collecting agent. The collecting agent has collecting performance for both zinc sulfide and zinc oxide, the zinc sulfide and the zinc oxide can be simultaneously sorted, the process of sorting the zinc oxide after the zinc sulfide is sorted is not needed, the collecting agent is high in selectivity, the ore sorting process is simple in flow, the cost is low, the grade of the zinc concentrate obtained in a floatation manner is greater than 35%, and the grade and the recovery rate are obviously higher than those of conventional chemicals.

The invention provides a preparation method of 1,2-benzisothiazole-3-ketone. The preparation method comprises the following steps of dissolving salicylhydroxamic acid into methanol; adding sodium hypochlorite with the concentration being 10 to 20 percent; taking a reaction for 20 to 40s at room temperature; performing dilution by distilled water; performing extraction by ethyl acetate; performing organic phase drying by distillation to obtain slight yellow solid; performing suction filtration to obtain a product of the 1,2-benzisothiazole-3-ketone. The method has the advantages that the synthesis process is simple; the cost is low; green and environment-friendly effects are achieved; the time is short; no byproduct is produced; the yield is as high as more than 82 percent.

The invention relates to a preparation method of high-content liquid sodium salicylhydroxamic acid and belongs to the field of preparation of mineral smelting materials. The preparation method involved in the invention comprises the following steps: carrying out a hydroxyl oximation reaction on salicylate and hydroxylamine sulfate in a solution containing a macromolecular emulsifier and alkali, and then carrying out solid-liquid separation to obtain the liquid sodium salicylhydroxamic acid, wherein the macromolecular emulsifier is at least one of pesticide emulsifier 400#, pesticide emulsifier700#, APEP-108 and pesticide emulsifier 1602#. The invention further provides the liquid sodium salicylhydroxamic acid prepared by adopting the preparation method; based on salicylhydroxamic acid, the content of the salicylhydroxamic acid is 22.9 to 23.8 percent. The preparation method involved in the invention has the characteristics of no need of repeatedly adding acid and alkali, no wastewaterand high product utilization rate and content.

The invention discloses a method for comprehensively recovering iron, sulfur and titanium from complex polymetallic ore. The method comprises the following steps that firstly the complex polymetallic ore is ground; then strong magnetic separation, weak magnetic separation and scavenging are carried out to obtain iron ore concentrate and final strong magnetic scavenging tailings; the final strong magnetic scavenging tailings are mixed with oxalic acid, butyl xanthate and terpenic oil to perform sulfur flotation, and final sulfur concentrate and final sulfur flotation tailings are obtained; the final sulfur flotation tailings are reground, obtained reground fine materials are mixed with sodium fluosilicate, sodium silicate, citric acid, sodium hexametaphosphate, lead nitrate, benzohydroxamic acid and salicylhydroxamic acid for titanium flotation, one-time roughing and more than one-time concentration are adopted, and titanium concentrate and concentration flotation tailings of corresponding sections are obtained; and the obtained flotation titanium concentrate is mixed with hydrochloric acid and hydrofluoric acid for at least one time of acid leaching to obtain a titanium product. In this way, high-quality titanium concentrate can be obtained, and meanwhile, valuable components of iron and sulfur are effectively recycled, so that resource utilization of titanium-containing polymetallic ore is achieved.

The invention belongs to the technical field of organic / inorganic functional compound adsorbents and provides a hydroximic acid functionalized polymer / inorganic compound adsorbent capable of efficiently adsorbing flavonoids substances and a preparation method thereof, aiming at overcoming the disadvantages of materials used by existing extraction and purification of the flavonoids substances that the extraction rate is low, the purity is not high and the reusability is poor and the like. The hydroximic acid functionalized polymer / inorganic compound adsorbent is composed of micron-grade silicon dioxide and a hydroximic acid functionalized polymer with a hydrogen bond mutual effect on a flavonoids compound. The hydroximic acid functionalized polymer is composed of two substances including a hydroximic acid functional group and polystyrene, and salicylhydroxamic acid forms the hydroximic acid functional group. The adsorbent has an ultrahigh adsorption property on the flavonoid compound, and the adsorption amount on quercetin reaches 452mg / g; the hydroximic acid functionalized polymer / inorganic compound adsorbent is insoluble, has micron-grade particles and is convenient to separate. In a utilization process, the adsorbent can be regenerated by an alkali solution with an electrolyte and can be repeatedly utilized. The adsorbent provided by the invention has the advantages that a preparation process is simple, performances are stable, the treatment speed is rapid, and purification operation of a flavonoid rough extracting solution in Chinese herbal medicines is simple, convenient and feasible.

The invention provides application of salicylhydroxamic acid to detection of hypochlorite and specifically discloses a fluorescence detection method for hypochlorite. The detection method uses salicylhydroxamic acid for quantitative detection of the content of hypochloric acid in a HEPES solution with a pH value of 7.4. The detection method shows high sensitivity and selectivity to hypochlorite; a detection reagent is cheap; detection process is easy, sensitive and rapid; and detection results are accurate.

The invention relates to a preparation method of high-content liquid sodium salicylhydroxamic acid, which belongs to the field of preparation of mineral smelting materials. The preparation method of the present invention is that salicylate and hydroxylamine sulfate are subjected to a hydroximation reaction in a solution containing a polymer emulsifier and an alkali, followed by solid-liquid separation to obtain the liquid sodium salicylic hydroxamate; The polymer emulsifier described is phenylethylphenol formaldehyde resin polyoxyethylene ether, alkylphenol formaldehyde resin polyoxyethylene ether, alkylphenol polyoxyethylene polyoxypropylene ether, tristyrylphenol polyoxypropylene polyoxyethylene at least one of block polymers. The invention also provides the liquid sodium salicylhydroxamic acid prepared by the preparation method, the content of salicylic hydroxamic acid is 22.9%-23.8% based on salicylic hydroxamic acid. The invention has the characteristics of no need to add acid and alkali repeatedly, no waste water, high product utilization rate and high content.