120results about How to "Not oxidized" patented technology

The disclosed manufacture method for Cu-covered-Al pipeline product comprises: 1. pre-preparing the copper into pipe with uniform wall thickness; 2. cleaning the pipe inner wall to remove its oil pollution and oxidation layer; 3. coating a protective layer on the inner wall of copper pipe; 4. heating to 500-700Deg for pre-processing; 5. with the protection of inert gas, casting molten Al into the pipe inside; and 6. rolling and drawing. This invention overcomes the defects in traditional techniques, and improves product stability.

The invention relates to a preparation method for a modified LiFePO4 lithium ion battery anode material, which belongs to the field of lithium ion battery materials. In the process of preparing a LiFePO4 lithium ion battery cathode material, a modifier is added, and the modifier is cellulose fiber, a lignin salt or a mixture of the two. According to the invention, cheap lignin, a renewable natural high-molecular material, is used as a carbon source precursor for the LiFePO4 lithium ion battery anode material, and lignin is widely available and easy to well mix with lithium source compounds, iron source compounds and phosphor source compounds once and for all; the prepared LiFePO4 lithium ion battery anode material has high purity and good electrochemical performance; a process for the anode material is simple and is easy to control; low production cost is obtained; a lithium ion battery made of the cathode material has a stable quality and 0.2C charge-discharge reversible specific capacity higher than 157 mAh / g, and battery capacity of the prepared lithium ion battery does not attenuate after 50 times of cycle; the method is applicable to large scale industrial production.

The invention relates to the technical field of electronic cigarettes, in particular to a porous ceramic heating body and a preparation method thereof. The porous ceramic heating body comprises a porous ceramic matrix and a metal heating element. The porous ceramic matrix comprises the following raw materials in parts by weight: 1-20 parts of emery, 30-50 parts of quartz sand, 10-50 parts of diatomite, 1-5 parts of magnesium carbonate, 1-5 parts of calcium carbonate and 5-20 parts of a pore forming agent. The porous ceramic heating body is novel in structure, high in product porosity and highin strength; the metal heating element is not oxidized; the diatomite forms gaps under the action of the pore forming agent, so the porosity of the produced porous ceramic heating body is guaranteed;magnesium carbonate and calcium carbonate can decompose a part of carbon dioxide gas under a high-temperature condition, so porosity is improved; and magnesium oxide and calcium oxide generated afterhigh-temperature decomposition form aluminosilicate together with silicon dioxide and aluminum oxide, so the inter-binding property of material particles is improved, and the structural stability andstrength of the porous ceramic matrix are improved.

The invention relates to a cooling device for direct reduction iron. The cooling device comprises a cooling cylinder, wherein a gear ring is fixed on the outer circumference of the cooling cylinder; a transmission device is used for driving the gear ring to rotate; one end of the cooling cylinder is connected with a feeding hopper, and the other end of the cooling cylinder is connected with a kiln tail box; the lower end of the kiln tail box is provided with a discharging pipe; a water sleeve is fixed on the inner wall of the cooling cylinder; the discharging end of the feeding hopper is arranged in the water sleeve; a cooling water channel is formed between the outer wall of the water sleeve and the inner wall of the cooling cylinder; one end of the cooling water channel is provided a water inlet and a water outlet; and the inner wall of the water sleeve is provided with spiral fins. In the invention, a cooling cylinder shell is forcedly cooled by adopting water sleeve type high-speed water current, and the walking path of the direct reduction iron in the cylinder is controlled by using the spiral fins, so that the walking time of the direct reduction iron in the cylinder is prolonged, the cooling efficiency is greatly increased, the diameter and the length of the cooling cylinder are reduced, the equipment weight is greatly reduced, and the transmission power and power consumption of the equipment are lowered; and meanwhile, no steam is dissipated, so that the environmental pollution is improved greatly.

The invention discloses copper and copper alloy casting equipment under the protection of nitrogen. The equipment comprises a crystallizer assembly, and a secondary water cooling device and a casting well which are positioned below the crystallizer assembly. The equipment is characterized in that: an airtight protective cover is arranged between the crystallizer assembly and the casting well; the secondary water cooling device is connected to a secondary water cooling-deoxidizing device through a secondary cooling water pipe which is connected with a nitrogen injection pipe and a valve; and the bottom of the casting well is provided with a cooling water return pipe. Under the sealing protection of the nitrogen, outside air is prevented from entering the casting well so as not to contact high-temperature copper ingots in the casting process, the copper ingots are prevented from being oxidized by the air, the surface non-oxidation casting of industrial pure copper, high copper and a white copper alloy is realized, and the aims of reducing the oxidation loss of copper metal and production cost are fulfilled.

The invention relates to the field of beverage processing, in particular to EGCG (Epigallocatechin Gallate)-added compound protein acidic beverage and a preparation method thereof. According to the EGCG-added compound protein acidic beverage provided by the invention, the EGCG-added compound protein acidic beverage contains 0.7-1.0 part of protein, 0.3-0.6 part of stabilizer, 5*10<-3> to 20*10<-3> part of EGCG, 0.3-0.5 part of citric acid and 0.01-0.02 part of sodium L-ascorbate, based on 100 parts by weight of raw materials. According to the EGCG-added compound protein acidic beverage and the preparation method of the EGCG-added compound protein acidic beverage, the acidity is adjusted by adding the citric acid into the beverage, so that the pH value of the beverage can be in the range of 4.0 to 4.5, the EGCG can be stably present at the acidity, and soybean protein isolate and whey protein concentrate which are simultaneously added can also be stably present without flocculation; and bee honey, polydextrose and oligosaccharides are further added into the beverage, so that the EGCG-added compound protein acidic beverage has the advantages of comprehensive regulation and improvement on human metabolic function, excellent mouth feel and healthcare function.

The invention discloses a ceramic support for a microwave magnetron and a preparation method of the ceramic support, and relates to the technical field of metalized ceramic processing. The ceramic support for a microwave magnetron comprises a ceramic matrix and a metalized layer. The ceramic matrix is prepared from raw materials such as a silicon carbide-triazole silane-aluminum nitride net-shapedmatrix, blast furnace slag, a dispersing agent and a defoaming agent through the steps of preparation of the silicon carbide-triazole silane-aluminum nitride net-shaped film coating matrix, mixing, granulation, sintering and the like. Raw materials of the metalized layer comprise titanium powder, copper powder, clay and a binder. The invention further discloses a preparation method of the ceramicsupport composed of the metalized layer and the ceramic matrix. The ceramic support for a microwave magnetron provided by the invention has high density and tensile strength, excellent tensile strength, toughness, high temperature resistance and thermal conductivity, the cost of raw materials can be reduced, and the purposes of energy conservation and environmental protection can be achieved.

The invention discloses a drug composition containing a lansoprazole compound, which comprises the following raw materials in parts by weight: 10-20 parts of lansoprazole, 1-10 parts of edetate disodium, 1-20 parts of mannitol, 5-10 parts of sodium sulfite and 10-30 parts of sodium citrate. According to the drug composition, a pH regulator sodium citrate is screened out by a large number of tests and compounded with a stabilizing agent edetate disodium, the synergistic interaction is obvious; decrease of a pH value of strongly basic lansoprazole solution during production or a lyophilized agent during storage can be avoided well; therefore, re-dissolution of the lansoprazole lyophilized agent can be well avoided; and the solubility is good. The drug composition does not go bad and is not oxidized in a storage process, and the administration safety is ensured.

The invention provides a device for accurately controlling the local temperature of an aluminum profile hot extrusion die. The device comprises a liquid nitrogen container, a low temperature control valve, a liquid nitrogen pipeline, a die cushion, the die and a temperature controller. The die is installed in the die cushion, the liquid nitrogen pipeline is connected between the liquid nitrogen container and the die cushion and used for delivering liquid nitrogen into the die cushion, and the low temperature control valve is arranged on the liquid nitrogen pipeline and controls the flow of theliquid nitrogen. A contact type thermocouple is arranged in the die, the contact type thermocouple is connected with the temperature controller through a compensating lead, and the temperature controller is electrically connected with the low temperature control valve and transmits a direct current electric control signal to the low temperature control valve. The invention further provides a method for accurately controlling the local temperature of the aluminum profile hot extrusion die. A feedback signal is provided for the low temperature liquid nitrogen control valve by directly measuringthe temperature of the die, so that the temperature of the die is accurately controlled, and the changing hysteresis quality and inconsistency of the high temperature of a profile and the temperatureof the die at an outlet of a pressing machine in the aluminum extrusion process are overcome.

The invention discloses a method for quickly preparing high-performance graphene. The method comprises the steps of putting graphite oxide into a reactor, vacuumizing the reactor, treating the graphite oxide by three-stage gradient microwave radiation, and peeling off the graphite oxide expanded with heat, thus obtaining high-performance graphene. The method has the advantages of high production efficiency, low production cost, high safety and reliability in the operation process and high product quality.