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214 results about "Magma" patented technology

Magma (from Ancient Greek μάγμα (mágma) meaning "thick unguent") is the molten or semi-molten natural material from which all igneous rocks are formed. Magma is found beneath the surface of the Earth, and evidence of magmatism has also been discovered on other terrestrial planets and some natural satellites. Besides molten rock, magma may also contain suspended crystals and gas bubbles. Magma is produced by melting of the mantle and/or the crust at various tectonic settings, including subduction zones, continental rift zones, mid-ocean ridges and hotspots. Mantle and crustal melts migrate upwards through the crust where they are thought to be stored in magma chambers or trans-crustal crystal-rich mush zones. During their storage in the crust, magma compositions may be modified by fractional crystallization, contamination with crustal melts, magma mixing, and degassing. Following their ascent through the crust, magmas may feed a volcano or solidify underground to form an intrusion (e.g., an igneous dike or a sill). While the study of magma has historically relied on observing magma in the form of lava flows, magma has been encountered in situ three times during geothermal drilling projects—twice in Iceland (see Magma usage for energy production), and once in Hawaii.

Device and process for converting calcium process desulfurization into temperature difference crystallizing ammonia process desulfurization

The invention belongs to the technical field of environment protection, and relates to a device and a process for temperature difference crystallizing ammonia process desulfurization, which is especially suitable for the ammonia process modification and newly-built desulfurization of the original calcium process desulfurization device. The device comprises a desulfurization tower, a densifying device, a gas-liquid heat exchanger, a circulating pump, a concentration circulating pump, a magma pump, a concentration crystallization tank and a drying system, wherein the desulfurization tower, the circulating pump, the magma pump and the drying system adopt the devices in the original calcium process desulfurization; the lower part of the densifying device is provided with a gas distributor, andthe upper part thereof is provided with spray heads which are arranged in 2-3 layers; spray heads in the desulfurization tower are arranged in 2-4 layers, a liquid supplementation pipe is connected with the spray heads at the lowest layer in the desulfurization tower; the concentration crystallization tank is a tank with a conical bottom part; and the upper part of the concentration crystallization tank is provided with a pipeline to be connected with the bottom of the densifying device, the middle of the concentration crystallization tank is provided with a pipeline to be connected with theconcentration circulating pump, and the bottom is provided with a pipeline to be connected with the magma pump. The invention can farthest utilize the original devices on the premise of guaranteeing the normal desulfurization efficiency, thereby saving the investment, reducing the energy consumption and eliminating the secondary pollution.
Owner:江苏世纪江南投资有限公司

Laterite-nickel ore combination leaching process

The invention relates to a laterite-nickel ore combination leaching process, which comprises that: limonite type laterite-nickel ore is subjected to crushing grading, and then is added with concentrated sulfuric acid to carry out primary stage normal pressure stirring self-heating leaching, serpentine type laterite-nickel ore is subjected to crushing grinding, the obtained serpentine type laterite-nickel ore and the primary stage leached ore magma are concurrently conveyed to a pressure kettle, and serpentine is leached by using the primary stage normal pressure leaching residual acid and the acid produced through iron precipitation in the pressure kettle, or mixing type laterite-nickel ore is subjected to grading, the obtained fine particle-grade ore is added with concentrated sulfuric acid to carry out primary stage normal pressure stirring leaching, ore on the sieve is subjected to crushing grinding, the grinded ore and the primary stage leached ore magma are concurrently conveyed to a pressure kettle, and coarse particle-grade ore leaching is performed by using the primary stage normal pressure leaching residual acid and the acid produced through iron precipitation in the pressure kettle. According to the invention, the process has characteristics of no special requirements on ore types and grades, wide raw material adaptability, investment reduction, energy consumption reduction, production cost reduction, and simple process, wherein the Ni recovery rate and the Co recovery rate of the whole process of the present invention are respectively more than 90% and 88%, and are higher than the Ni recovery rate and the Co recovery rate of the treatment method in the existing non-high-pressure acid leaching technology.
Owner:BEIJING GENERAL RES INST OF MINING & METALLURGY

Cenozoic magmatic copper polymetallic ore prospecting method

InactiveCN108761564AGreat Prospecting BreakthroughEarth material testingGeological measurementsPetrochemicalCenozoic
The invention discloses a cenozoic magmatic copper polymetallic ore prospecting method. The method comprises the following steps: determining a magmatic zone or an abnormal area (zone) according to magmatic ore deposit and spot output space-time and geological background; preliminarily determining prospecting targets and target classification by virtue of stream sediment measurement; selecting zones having excellent copper mineralization or molybdenum mineralization or excellent abnormality in target classification for performing magnetic survey verification, and determining a first precedencetarget area or a first abnormal area; determining a second precedence target area or a second abnormal area in the first precedence target area or the first abnormal area by adopting high resolutionremote sensing; performing on-the-spot survey inspection on the second precedence target area or the second abnormal area, and finding out a geologic abnormal area (zone) or a mineralization clue area; performing soil profile or petrochemical profile measurement according to 1:10000, and determining the ore-bearing geological body position on the surface and mineralized body features; performing shallow exposure recourse to control the specific location and shape of the mineralized zone or mineralized body by utilizing trenching; and determining the depth grade thickness scale and occurrence conditions of the mineralized body by utilizing drilling, and discovering the metal ore or ore deposit.
Owner:青海省地质调查院

Device and process for converting calcium process desulfurization into temperature difference crystallizing ammonia process desulfurization

The invention belongs to the technical field of environment protection, and relates to a device and a process for temperature difference crystallizing ammonia process desulfurization, which is especially suitable for the ammonia process modification and newly-built desulfurization of the original calcium process desulfurization device. The device comprises a desulfurization tower, a densifying device, a gas-liquid heat exchanger, a circulating pump, a concentration circulating pump, a magma pump, a concentration crystallization tank and a drying system, wherein the desulfurization tower, the circulating pump, the magma pump and the drying system adopt the devices in the original calcium process desulfurization; the lower part of the densifying device is provided with a gas distributor, and the upper part thereof is provided with spray heads which are arranged in 2-3 layers; spray heads in the desulfurization tower are arranged in 2-4 layers, a liquid supplementation pipe is connected with the spray heads at the lowest layer in the desulfurization tower; the concentration crystallization tank is a tank with a conical bottom part; and the upper part of the concentration crystallization tank is provided with a pipeline to be connected with the bottom of the densifying device, the middle of the concentration crystallization tank is provided with a pipeline to be connected with theconcentration circulating pump, and the bottom is provided with a pipeline to be connected with the magma pump. The invention can farthest utilize the original devices on the premise of guaranteeing the normal desulfurization efficiency, thereby saving the investment, reducing the energy consumption and eliminating the secondary pollution.
Owner:江苏世纪江南投资有限公司

Method for predicting shrinkage cavity defect of TC4 titanium alloy casting through BP neural network

PendingCN107577850ASolve the problem of insufficient prediction accuracyImprove casting qualitySpecial data processing applicationsNeural learning methodsMagmaInvestment casting
The invention belongs to a method for predicting a shrinkage cavity defect of a TC4 titanium alloy casting through a BP neural network. According to the method, the BP neural network is applied to shrinkage cavity position prediction of the TC4 titanium alloy casting; according to formation reasons of a shrinkage cavity and the characteristics of titanium alloy investment casting, the seven parameters of cavity filling time, material flowing distance, material age, free surface area*flowing time, local solidification time, cooling rate and temperature gradient are selected the first time to serve as input of the BP neural network; and by using the judgment of whether a corresponding position has a shrinkage cavity as output of the BP neural network, the method for effectively predicting the shrinkage cavity defect of the TC4 titanium alloy casting is established. Through the method, the position of the shrinkage cavity of TC4 titanium alloy in the casting process can be predicted moreaccurately, the difficulty in titanium alloy casting shrinkage cavity detection and the problem that prediction results of MAGMA, TSolver, ProCAST and other casting simulation software are insufficient in accuracy are solved, and a data basis is provided for precisely predicting and effectively avoiding the defect of the TC4 titanium alloy in the casting process.
Owner:AVIC BEIJING INST OF AERONAUTICAL MATERIALS

Process for preparing low-salt heavy soda ash

The invention relates to a method for preparing low-salt heavy soda ash by applying a multi-temperature phase diagram of a Na2CO3-NaHCO3-H2O ternary system, utilizing the feature that the system can precipitate anhydrous sodium carbonate crystals at the appropriate temperature and the composition and adopting the anhydrous sodium carbonate flow process. The method comprises the following steps: carrying out pressure wet decomposition on mixed solution of the heavy soda ash which is rich in sodium bicarbonate or refined natural alkali halide, leading the content of the sodium bicarbonate and the content of sodium carbonate in the solution to achieve the corresponding proportion, further leading the solution to enter into a multi-effect evaporator for evaporation and concentration, controlling the crystallization temperature to be above the phase transition point from anhydrous sodium carbonate to sodium carbonate monohydrate, and ensuring that the precipitated solid phase is the anhydrous sodium carbonate; and taking out a magma by self-pressure, carrying out thermal insulation and separation, obtaining a filter cake which mainly contains the anhydrous sodium carbonate, and drying the filter cake for preparing the low-salt heavy soda ash. The process can change the traditional two-step dry calcination to one-step wet calcination, simplify and shorten the process flow, reduce the area occupied by devices, improve the operation environment, simultaneously improve the quality of a product and reduce the energy consumption.
Owner:DALIAN RES & DESIGN INST OF CHEM IND

Prospecting method for orogenic magmatic melting nickel ore

InactiveCN108802830AWidely applicable to prospectingImprove the success rate of prospectingElectric/magnetic detectionAcoustic wave reradiationWater basedMagma
Provided is a prospecting method for orogenic magmatic melting nickel ore. The method comprises the following steps: selecting the exploration area in the extended environment of the Late Devonian andthe Early Devonian in the land-continent collision phase, performing the water-based sediment measurement, and preliminarily screening the target area through regional avionic abnormality; carrying out large-scale high-precision gravity on the preliminarily screened target area, and specifically delineating the basicity- ultrabasic rock mass; according to the delineated basicity- ultrabasic rockmass, preliminarily screening the ore-bearing rock mass by a controllable source audio magnetotelluric method, and then carrying out the large-scale soil geochemical measurements to identify copper-nickel ore prospecting clues; and through surface geological survey of minerals, further sampling and analyzing trenches and drilling, and delineating ore bodies. According to the method, the prospecting range can be reduced, the exploration period is short, and the prospecting success rate is improved, the exploration efficiency is high, and meanwhile, the method can be widely applied to the searchfor various metal mines in the magnesium-iron-supermafic rock area.
Owner:青海省地质矿产勘查开发局
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