60results about How to "Reduce mass ratio" patented technology

The invention discloses a circumferential combustion-increasing structure on the outer end surface of the charge of a missile solid motor, including a charge column, a cladding sleeve and a liner. The grain is bonded to the covering sleeve through the lining layer, and the initial combustion surface of the grain can be changed by adjusting the length of the covering sleeve, so that the engine can meet the overall engine initial thrust index requirements. Compared with the prior art, the present invention adopts the hoop-increasing structure, and its advantages and beneficial effects are: the hoop-increasing structure is easy to measure and detect, and at the same time, it eliminates the stress concentration and cracks of the grain caused by the complex profile , so that the risk of engine operation is reduced; the initial burning surface of the grain can be effectively adjusted without losing the amount of medicine, so that the initial thrust of the engine can be increased, thereby ensuring the mass ratio of the engine.

In a method of tracking an object, a plurality of images of a target object is obtained. A super-resolved image of the target object is calculated from the plurality of images. A further image of the target object is obtained. The further image is correlated with the super-resolved image, in order to identify the location of the target object in the further image.

The invention discloses a method for separating mesitylene via extractive distillation, wherein an extractive distillation solvent adopted in the method is one of N-methyl-2-pyrrolidone and 2-pyrrolidone, and preferably is N-methyl-2-pyrrolidone. The method disclosed by the invention has the advantages of being relatively simple in separation process, low in operating energy consumption, and high in product yield. The extractive distillation solvent adopted in the method is high in separation efficiency for mesitylene and o-methyl-ethylbenzene, so that the separation process can be realized on an extractive distillation tower with few tower plates; and moreover, the solvent is easy to recover and good in chemical thermostability.

A method for making reduced iron using blast-furnace sludge is provided. The method includes a mixing step of mixing the blast-furnace sludge and an iron-oxide-containing powder to prepare a mixed material, an agglomerating step of agglomerating the mixed material to form agglomerates, a feeding step of feeding the agglomerates onto a continuously moving hearth, and a reducing step of heating the agglomerates to remove zinc and reduce the agglomerates.

The invention relates to chicken feed for increasing immune organ indexes. The chicken feed comprises a feed main ingredient, wherein the feed main ingredient comprises the following components: dry corn, 43% soybean meal, bran, DDGS, corn protein power, flour, north sea fish meal, a mildew preventive and a chicken feed 511E. A traditional Chinese medicine additive comprises the following raw materials: white hyacinth bean, changium smyrnioides, radix isatidis, white atractylodes rhizome, white paeony root, coriolus versicolor and radix glycyrrhizae. The chicken feed for increasing the immune organ indexes, provided by the invention, is reasonable in formula, high in palatability, capable of being quickly digested and absorbed, effectively improving the immunity of chicken, improving the daily gain mass, lowering the mass ratio and remarkably lowering the mortality and elimination rate.

The invention discloses an extraction system for extracting lithium and boron by separating calcium from calcium-containing brine by a secondary amid/alkyl alcohol composite solvent, an extraction method and application of the extraction method. In the extraction system, secondary amid and alkyl alcohol serve as extracting agents for extracting lithium and boron correspondingly and consist of single compound or a mixture of more than two compounds; the total number of carbon atoms in the molecules is 12 to 18 and 8 to 20 correspondingly, and the freezing point of the extraction system is lessthan 0 DEG C. Single-stage or multi-stage countercurrent extraction is conducted under the conditions that the volume ratio of an organic phase to a brine phase is (1-10):1, the density of the brine is 1.30 to 1.56 g/cm<3>, the pH value of the brine is 0 to 7 and the temperature is 0 to 50 DEG C, an aqueous phase with low calcium-lithium ratio is obtained through back extraction, and lithium chloride, lithium carbonate, lithium hydroxide and boric acid are obtained respectively through concentration, impurity removal and preparation. The secondary amide is simple in molecular structure, and the lithium and the boron can be extracted simultaneously by the composite solvent improved by the alkyl alcohol; multi-stage extraction rate is high, back extraction is conducted by using water and acid and alkali consumption is greatly reduced; and the extraction separation flow is shortened, and the extraction system has small solution loss and is suitable for development of oilfield brine.

The invention discloses an extraction system and method for separating magnesium and extracting lithium from magnesium containing brine with a secondary amide/tertiary amide complex solvent and application of the extraction method. The extraction system contains secondary amide and tertiary amide, and each of the secondary amide and the tertiary amide is composed of a single compound or a mixtureof two or more compounds. The total number of carbon atoms in a molecule of the secondary amide ranges from 12 to 18, the total number of carbon atoms in a molecule of the tertiary amide ranges from 18 to 32, and the solidifying point of the extraction system is lower than 0 DEG C. Single-stage or multi-stage counter-current extraction is carried out under the condition that the volume ratio of anorganic phase to a brine phase is (1-10):1, the density of the brine is 1.25-1.38 g/cm<3>, and the temperature ranges from 0 DEG C to 50 DEG C; and a water phase low in magnesium-lithium ratio is obtained through reextraction, and lithium chloride, lithium carbonate and lithium hydroxide products are obtained through concentration, purification and preparation. The extraction system and method for separating magnesium and extracting lithium from the magnesium containing brine with the secondary amide/tertiary amide composite solvent and the application of the extraction method have the excellent effects that a secondary amide extraction agent is simple in molecular structure and easy to produce, and the viscosity and other physical characters of the complex solvent are improved through the tertiary amide; the multi-stage extraction rate of Li+ is high, the magnesium-lithium separation coefficient is large, water is used for reextraction, and acid-base consumption is greatly reduced; and the extraction separation technological process is short, the extraction system is small in dissolution loss, and high industrial application value is achieved.

The invention discloses a glass tube of a novel high-efficiency energy-saving lamp, comprising the following components in percentage by mass: 67.2-67.5 percent of SiO2, 10.3-10.9 percent of Na2O, 5.6-6 percent of PbO, 5.1-5.3 percent of K2O, 3.9-4.1 percent of BaO, 2-2.3 percent of B2O3, 2.1-2.3 percent of Al2O3, 3.1-3.4 percent of CaO and 0.2-0.5 percent of MgO. When used, the invention greatly reduces lead content in a lamp tube and dust precipitation quantity of red lead at the same time and lightens environmental pollution.

The invention relates to a chicken feed capable of reducing the death rate of chicken. The chicken feed comprises a feed main material, wherein the feed main material is prepared from the following components: dried corns, 43% soybean meal, bran, DDGS, corn protein flour, poultry feed flour, Beihai fish meal, a mildew preventive and a chicken feed 511E; and a traditional Chinese medicine additive is prepared from the following raw materials: fructus amomi, herba dendrobii, eclipta prostrata, bighead atractylodes rhizome, astragalus membranaceus, trametes versicolor and liquorice roots. The chicken feed capable of reducing the death rate of the chicken provided by the invention is reasonable in formula, high in palatability and rapid to digest and absorb; the immunity of the chicken can be effectively improved; and meanwhile, the daily increasing mass is improved, the feed-mass ratio is reduced and the death and culling rate is remarkably reduced.

The invention discloses a method for preparing tungsten alloys with different components through same-furnace sintering. The method comprises the following steps of: 1, selecting fine tungsten powderand fine nickel powder, adding ultrafine iron powder, and carrying out mixing to obtain an activated high-tungsten mixture; 2, selecting coarse tungsten powder and nickel powder, adding iron powder, and carrying out mixing to obtain a passivated low-tungsten mixture; 3, obtaining an activated high-tungsten compact and a passivated low-tungsten compact by adopting cold isostatic pressing forming separately; and 4, carrying out same-furnace sintering on the activated high-tungsten compact and the passivated low-tungsten compact to obtain a high-tungsten alloy and a low-tungsten alloy separately.By selecting and designing the raw material components and contents of the high-tungsten alloy and the low-tungsten alloy, the sintering temperature of the activated high-tungsten mixture is reduced,and the sintering temperature of the passivated low-tungsten mixture is increased, so that the sintering temperature and the heat preservation time of the high-tungsten alloy and the low-tungsten alloy tend to be the same, the purpose of same-furnace sintering is achieved, the sintering periods of the tungsten alloys with different components are shortened, the production efficiency is improved,sintering conversion is not needed, and energy waste caused by sintering conversion is avoided.

The invention provides a lithium ion battery negative electrode current collector and a preparation method thereof. The lithium ion battery negative electrode current collector comprises a polyimide film and copper layers coating two sides of the polyimide film. The polyimide copper-plated film has high flexibility and low density of polyimide and high conductivity of copper at the same time, so that the mass ratio of inactive components in the current collector can be effectively reduced, and the rough surface appearance of the polyimide copper-plated film can also improve interface electron transmission; the reduced contact resistance of the current collector and the electrode layer is reduced, so that the electrode taking the polyimide copper-plated film as the current collector can show higher specific discharge capacity, better rate capability and cycling stability. Moreover, the invention also provides a preparation method of the lithium ion battery negative electrode current collector, two thin copper layers are coated on two sides of the polyimide film through chemical plating, and the preparation method has the advantages of low cost, simple equipment and wide application range.

The invention discloses an extraction system and an extraction method for extracting lithium from magnesium-containing brine by using a secondary amide/alkyl ester complex solvent, and application thereof. The extraction system contains secondary amide and alkyl ester which are respectively prepared from a single compound or a mixture of more than two compounds; in the molecules, the totals of carbon atoms are respectively 12 to 18 and 8 to 20; and the freezing point of the extraction system is smaller than 0 DEG C. The extraction method comprises the steps of carrying out single-stage or multi-stage counter-current extraction under the conditions that the volume ratio of an organic phase and a brine phase is 1 to 10:1, the brine density is 1.25 to 1.38g/cm<3> and the temperature is 0 to 50 DEG C, carrying out back-extraction to obtain a low-magnesium-lithium-ratio water phase, and obtaining lithium chloride, lithium carbonate and lithium hydroxide products through concentration, purification and preparation. The extraction system and the extraction method for extracting the lithium from the magnesium-containing brine by using the secondary amide/alkyl ester complex solvent, and the application thereof provided by the invention have the excellent effects that a secondary amide extraction agent is simple in molecular structure and easy to produce, the physical properties such asviscosity of the complex solvent is improved through alkyl ester, the Li+ multistage extraction rate is high, the lithium-magnesium separation coefficient is large, and the acid-alkali consumption isgreatly reduced due to back-extraction by water; and the extraction separation process flow is short, and the extraction system is low in solution loss and has a favorable industrial application value.

The invention discloses an extraction system and an extraction method for separating magnesium and extracting lithium from magnesium-containing brine with a secondary amide/alkyl ketone complex solvent and application of the extraction method. The extraction system contains secondary amide and alkyl ketone each of which consists of a single compound or more than two mixtures; the total number of carbon atoms in a molecule of the secondary amide and the total number of carbon atoms in a molecule of the alkyl ketone are 12-18 and 8-12 respectively; and the solidifying point of the extraction system is lower than 0 DEG C. Single-stage or multistage counter-current extraction and back extraction are performed under the conditions that the volume ratio of an organic phase to a brine phase is (1-10) : 1, the density of the brine is 1.25-1.38 g/cm<3> and the temperature is 0-50 DEG C to obtain an aqueous phase low in magnesium and lithium ratio, and concentration, impurity removal and preparation are performed to obtain a lithium chloride product, a lithium carbonate product and a lithium hydrate product. The extraction system and the extraction method have the excellent effects a secondary amide extraction agent is simple in molecular structure and easy to produce, and the alkyl ketone improves physical properties, such as the viscosity of the complex solvent, and the like; the multistage extraction rate of Li<+> is high; the magnesium and lithium separation coefficient is big; back extraction is performed with water, so that acid and alkali consumption is greatly reduced; the extraction and separation process flow is short; the extraction system has small solvent loss; and the extraction system and the extraction method have high industrial application value.

The invention discloses a high-meat-quality breeding method for white-feather chickens. The white-feather chickens are divided into four stages of the 0-7-day-old stage, the 8-21-day-old stage, the 22-34-day-old stage and the 35-42-day-old stage, growth stages are reasonably divided by taking 42-day-old slaughter broilers as a standard, and meanwhile, appropriate breeding density, breeding temperature, feeding frequency and feeding formula are used in cooperation, so that the physical quality and disease resistance of the white-feather chickens are improved, the daily gain of the white-feather chickens is improved, meanwhile, the feed-to-mass ratio is reduced, and the death and culling rate is remarkably reduced.