48results about How to "High and stable recovery" patented technology

The invention discloses a method for extracting indium-zinc alloy from waste Hg-free alkaline zinc manganese dioxide battery, which comprises separating and extracting cathode substances from waste Hg-free alkaline zinc manganese dioxide battery, dissolving with a coordination agent containing zinc ions, electrolyzing the filtrate to obtain zinc, and smelting the insoluble substances to obtain indium-zinc alloy. Based on the existing state of indium in waste Hg-free alkaline zinc manganese dioxide battery and the practical recovery of waste Hg-free alkaline zinc manganese dioxide battery, the invention realizes the indium recovery and has the advantages of simple process, easy application, high and stable recovery rate of indium, less use of chemical additives in the recovery process, and no secondary pollution. The recycled indium-zinc alloy (indium content of 0.1-99.9 percent) can be used as a raw material of cathode material (indium-containing zinc powder) in the production of Hg-free alkaline manganese battery. The invention realizes the cyclic regeneration of cathode material of waste alkaline zinc manganese dioxide battery, and the industrial output value of the extract is far larger than the recovery and production costs, therefore, the invention is better in economic benefit and high environment-protection value.

The invention relates to a method for alloying manganese ore in an LF (ladle furnace) furnace, and belongs to the field of steel-making production technologies. The technical scheme is as follows: the manganese ore is added to a ladle to be used as the top slag or added along with the slag in the LF furnace when a converter performs steel tapping; the LF furnace performs arcing and slagging, and carborundum-made reducing slag is synchronously added, and white slag is maintained; after the completion of manganese reduction, the refining is finished. Manganese ore is added with the proportioning of 3 to 6 kg/t; the manganese ore replaces wollastonite and fluorite, as well as replacing some silicomanganese, thus the quantity of added silicomanganese can be reduced; and the quantity of reduced replaced silicomanganese is 2.2 to 4.5 kg/t. According to the method, the manganese ore which is low in cost is applied to the LF furnace for alloying for the first time, and the silicomanganese or ferromanganese high in cost is replaced; the recovery rate of manganese is more than 90%, therefore, the cost of steelmaking is obviously reduced; and meanwhile, the manganese ore has high effect on slagging in the LF furnace, so the manganese ore can replace some fluorite for reducing the environmental pollution and erosion on wrapping liner.

The invention provides a titanium-aluminum core-spun yarn which comprises a core layer and an aluminum sheath wrapped outside the core layer, wherein the core layer is titanium-iron powder. The invention provides application of the titanium-aluminum core-spun yarn in preparing titanium alloying molten steel. The invention provides a preparation method of the titanium alloying molten steel, which comprises the following steps: feeding the titanium-aluminum core-spun yarn into molten steel to be subjected to titanium alloying, and carrying out titanium alloying. The invention provides a titanium alloying molten steel prepared by the method. The invention provides a titanium-containing alloy steel which is prepared by casting the titanium alloying molten steel. In the preferable embodiment, the core-spun yarn is used for implementing titanium alloying of molten steel, and the titanium recovery rate is high and stable (80-85%), thereby effectively enhancing the quality of the molten steel.

The invention provides a cored wire and its application. The cored wire comprises a core layer and an external layer wrapping the core layer, wherein the core layer is a mixture containing a vanadium-nitrogen alloy, iron silicon nitride and an iron alloy. The invention also provides a vanadium and nitrogen alloyed molten steel, and a preparation method thereof. The method comprises the steps of feeding the cored wire into molten steel to be vanadium and nitrogen alloyed, and carrying out vanadium and nitrogen alloying. The invention further provides a vanadium and nitrogen micro-alloyed steel. The vanadium and nitrogen micro-alloyed steel is obtained by casting the vanadium and nitrogen alloyed molten steel. The cored wire can be used for realizing the alloying of molten steel vanadium and nitrogen, can effectively increase the oxygen content as needed without influencing the vanadium content, enables vanadium-containing steel with a higher content of nitrogen to be produced as needed, and can realize high and stable nitrogen recovery rate.

The invention provides a purifying method for a high-purity echinocandin B mother nucleus or a salt thereof. The purifying method comprises the following steps: dissolving a crude product of an echinocandin B mother nucleus or a salt thereof to prepare a sample and loading the sample into a preparative high-performance liquid chromatographic column; carrying out elution with mixed liquor of an aqueous solution and an organic solvent as a mobile phase; and fractionally collecting eluates. The purifying method is simple to operate, high in purifying efficiency and easy in process flow; the recovery rate of the high-purity echinocandin B mother nucleus or the salt thereof is more than 85%; a small amount of organic solvents are used, so the method is friendly to environment; the method has good process reproducibility, can realize mass product, is high and stable in recovery rate and saves cost; product purity reaches 99% or above; the process of separation and purification is simple; andthe concentration of an organic phase is low, so elution time is short, and cost is saved.

The invention provides a titanium-calcium-silicon core-spun yarn which comprises a core layer and an outer layer wrapped outside the core layer, wherein the core layer contains titanium-iron powder and calcium-silicon powder. The invention provides application of the titanium-calcium-silicon core-spun yarn in preparing titanium alloying molten steel. The invention provides a preparation method of the titanium alloying molten steel, which comprises the following steps: feeding the titanium-calcium-silicon core-spun yarn into molten steel to be subjected to titanium alloying, and carrying out titanium alloying. The invention provides a titanium alloying molten steel prepared by the method. The invention provides a titanium-containing alloy steel which is prepared by casting the titanium alloying molten steel. In the preferable embodiment, the core-spun yarn is used for implementing titanium alloying of molten steel, and the titanium recovery rate is high and stable (80-85%), thereby effectively enhancing the quality of the molten steel.

The invention provides a core spun yarn and application thereof. The core spun yarn comprises a core layer and an outer layer wrapping the core layer, and the core layer is a mixture comprising vanadium nitrogen alloy, ferro-silicon nitride, niobium iron alloy and aluminum pills. The invention provides vanadium nitrogen alloy molten steel and a preparation method thereof, and the method includes feeding of the core spun yarn into the to-be-vanadium and nitrogen alloyed molten steel for vanadium nitrogen alloying. The invention provides vanadium nitrogen microalloyed steel, and the vanadium nitrogen microalloyed steel is casted by the vanadium and nitrogen alloyed molten steel. The core spun yarn is used for realizing molten steel vanadium and nitrogen alloying, nitrogen content can be effectively increased without affecting the vanadium content according to the need, vanadium containing steel with higher nitrogen content can be produced in the need of the molten steel, and the recovery rate of nitrogen is high and stable. The vanadium nitrogen microalloyed steel casted by the vanadium and nitrogen alloyed molten steel produced by use of the core spun yarn for the molten steel vanadium and nitrogen alloying is high in yield strength and tensile strength.

The invention provides a cored wire and its application. The cored wire comprises a core layer and an external layer wrapping the core layer, wherein the core layer is a mixture containing a vanadium-nitrogen alloy, manganese silicon nitride, a niobium-iron alloy and aluminum shots. The invention also provides a vanadium and nitrogen alloyed molten steel, and a preparation method thereof. The method comprises the steps of feeding the cored wire into molten steel to be vanadium and nitrogen alloyed, and carrying out vanadium and nitrogen alloying. The invention further provides a vanadium and nitrogen micro-alloyed steel. The vanadium and nitrogen micro-alloyed steel is obtained by casting the vanadium and nitrogen alloyed molten steel. The cored wire can be used for realizing the alloying of vanadium and nitrogen in molten steel, can effectively increase the oxygen content as needed without influencing the vanadium content, enables vanadium-containing steel with a higher content of nitrogen to be produced as needed, and can realize high and stable nitrogen recovery rate. The vanadium and nitrogen micro-alloyed steel obtained after casting the vanadium and nitrogen alloyed molten steel produced by carrying out molten steel vanadium and nitrogen alloying on the cored wire has high yield strength and tensile strength.

The invention provides a cored wire and its application. The cored wire comprises a core layer and an external layer wrapping the core layer, wherein the core layer is powder containing a vanadium-nitrogen alloy and iron silicon nitride. The invention also provides a vanadium and nitrogen alloyed molten steel, and a preparation method thereof. The method comprises the steps of feeding the cored wire into molten steel to be vanadium and nitrogen alloyed, and carrying out vanadium and nitrogen alloying. The invention further provides a vanadium and nitrogen micro-alloyed steel. The vanadium and nitrogen micro-alloyed steel is obtained by casting the vanadium and nitrogen alloyed molten steel. The cored wire can be used for realizing the alloying of molten steel vanadium and nitrogen, can effectively increase the oxygen content as needed without influencing the vanadium content, enables vanadium-containing steel with a higher content of nitrogen to be produced as needed, and can realize high and stable nitrogen recovery rate. The vanadium and nitrogen micro-alloyed steel obtained after casting the vanadium and nitrogen alloyed molten steel produced by carrying out molten steel vanadium and nitrogen alloying on the cored wire has high yield strength and tensile strength.

The invention provides a cored wire and its application. The cored wire comprises a core layer and an external layer wrapping the core layer, wherein the core layer is a mixture containing a vanadium-nitrogen alloy, manganese silicon nitride, an iron alloy and an iron-calcium alloy, and the iron alloy is a niobium-iron alloy and/or a titanium-iron alloy. The invention also provides a vanadium and nitrogen alloyed molten steel, and a preparation method thereof. The method comprises the steps of feeding the cored wire into molten steel to be vanadium and nitrogen alloyed, and carrying out vanadium and nitrogen alloying. The invention further provides a vanadium and nitrogen micro-alloyed steel. The vanadium and nitrogen micro-alloyed steel is obtained by casting the vanadium and nitrogen alloyed molten steel. The cored wire can be used for realizing the alloying of molten steel vanadium and nitrogen, can effectively increase the oxygen content as needed without influencing the vanadium content, enables vanadium-containing steel with a higher content of nitrogen to be produced as needed, and can realize high and stable nitrogen recovery rate.

The invention provides a cored wire and its application. The cored wire comprises a core layer and an external layer wrapping the core layer, wherein the core layer is a mixture containing a vanadium-nitrogen alloy, manganese silicon nitride, a titanium-iron alloy and an iron-calcium alloy. The invention also provides a vanadium and nitrogen alloyed molten steel, and a preparation method thereof. The method comprises the steps of feeding the cored wire into molten steel to be vanadium and nitrogen alloyed, and carrying out vanadium and nitrogen alloying. The invention further provides a vanadium and nitrogen micro-alloyed steel. The vanadium and nitrogen micro-alloyed steel is obtained by casting the vanadium and nitrogen alloyed molten steel. The cored wire can be used for realizing the alloying of molten steel vanadium and nitrogen, can effectively increase the oxygen content as needed without influencing the vanadium content, enables vanadium-containing steel with a higher content of nitrogen to be produced as needed, and can realize high and stable nitrogen recovery rate.

The invention provides a cored wire and its application. The cored wire comprises a core layer and an external layer wrapping the core layer, wherein the core layer is a mixture containing a vanadium-nitrogen alloy, manganese silicon nitride, an niobium-iron alloy and an aluminum-iron alloy. The invention also provides a vanadium and nitrogen alloyed molten steel, and a preparation method thereof. The method comprises the steps of feeding the cored wire into molten steel to be vanadium and nitrogen alloyed, and carrying out vanadium and nitrogen alloying. The invention further provides a vanadium and nitrogen micro-alloyed steel. The vanadium and nitrogen micro-alloyed steel is obtained by casting the vanadium and nitrogen alloyed molten steel. The cored wire can be used for realizing the alloying of vanadium and nitrogen in molten steel, can effectively increase the oxygen content as needed without influencing the vanadium content, enables vanadium-containing steel with a higher content of nitrogen to be produced as needed, and can realize high and stable nitrogen recovery rate.

The invention provides a method for detecting 15 antibiotics in a fish body, which comprises the following steps: sequentially adding an internal standard substance and an extraction solution into a fish meat sample, carrying out ultrasonic extraction, adding the obtained extraction solution into a solid-phase extraction column, enriching, eluting, degreasing, and determining the obtained sample solution by adopting ultra-high performance liquid chromatography-tandem mass spectrometry, 15 antibiotics in the sample solution are determined according to the retention time, an internal standard curve method is adopted for quantification, and the content of the 15 antibiotics in the sample solution is determined. According to the method for detecting the 15 antibiotics in the fish body, provided by the invention, 7 types of 15 antibiotics in fish meat can be rapidly, efficiently, sensitively and accurately detected at the same time, the detection efficiency is greatly improved, and the method has the advantages of high recovery rate, high sensitivity, high stability, low detection limit, more real and reliable detection result and the like.

The invention provides a titanium-magnesium composite core-spun yarn which comprises a core layer and an outer layer wrapped outside the core layer, wherein the core layer contains titanium-iron powder and magnesium powder. The invention provides application of the titanium-magnesium composite core-spun yarn in preparing titanium alloying molten steel. The invention provides a preparation method of the titanium alloying molten steel, which comprises the following steps: feeding the titanium-magnesium composite core-spun yarn into molten steel to be subjected to titanium alloying, and carrying out titanium alloying. The invention provides a titanium alloying molten steel prepared by the method. The invention provides a titanium-containing alloy steel which is prepared by casting the titanium alloying molten steel. In the preferable embodiment, the core-spun yarn is used for implementing titanium alloying of molten steel, and the titanium recovery rate is high and stable (80-85%), thereby effectively enhancing the quality of the molten steel.

The invention discloses a rapid and accurate detection method suitable for ochratoxin A in liquorice paste. The rapid and accurate detection method suitable for the ochratoxin A in the licorice paste is finally obtained through key control steps of selecting an extraction solvent, optimizing liquid-liquid extraction and back extraction purification, improving a leaching solution of immunoaffinity column purification and the like. When an extracting solution is prepared from a NaHCO3 solution with the concentration of 30 g/L and acetonitrile according to a volume ratio of 60:40, the liquorice paste is completely dissolved, the pH value is adjusted to be 2-3, trichloromethane is used for extraction, then an extracting solution back-extraction technology is used for purification, an immunoaffinity column is used for re-purification, then determination is conducted, and the method is simple and rapid, good in purification effect, capable of effectively removing impurity interference and high and stable in recovery rate. The detection method provided by the invention is used for detecting the ochratoxin A in the licorice paste, the recovery rate 9 is as high as 0%, the problem that the ochratoxin A in the licorice paste is difficult to rapidly and accurately determine by the existing method is effectively solved, and the low-cost, rapid and accurate determination method for content of the ochratoxin A in the licorice paste is established.

The invention provides a core spun yarn and application thereof. The core spun yarn comprises a core layer and an outer layer wrapping the core layer, and the core layer is a mixture comprising vanadium nitrogen alloy, ferro-silicon nitride, iron alloy and fluorspar. The invention provides vanadium nitrogen alloy molten steel and a preparation method thereof, and the method includes feeding of the core spun yarn into the to-be-vanadium and nitrogen alloyed molten steel for vanadium nitrogen alloying. The invention provides vanadium nitrogen microalloyed steel, and the vanadium nitrogen microalloyed steel is casted by the vanadium and nitrogen alloyed molten steel. The core spun yarn is used for realizing molten steel vanadium and nitrogen alloying, nitrogen content can be effectively increased without affecting the vanadium content according to the need, vanadium containing steel with higher nitrogen content can be produced in the need of the molten steel, and the recovery rate of nitrogen is high and stable. The vanadium nitrogen microalloyed steel casted by the vanadium and nitrogen alloyed molten steel produced by use of the core spun yarn for the molten steel vanadium and nitrogen alloying is high in yield strength and tensile strength.