17 results about "Pyroxene" patented technology

The invention discloses a method for preparing foamed ceramic through low-temperature sintering and a product prepared through the method, and the foamed ceramic with pyroxene minerals as a main crystal phase is prepared through low-temperature sintering through silicon carbide-desulfurization slag composite foaming, szaibelyite fluxing and crystal phase regulation and control. Therefore, the composite closed pore system foaming ceramic material with high mechanical property and closed pore property is obtained. Low-cost minerals and solid wastes are adopted as main raw materials, so that the production cost of the foamed ceramic is effectively reduced, and a solid foundation is laid for large-scale industrial application of the foamed ceramic; meanwhile, efficient resource utilization of solid waste is achieved, remarkable economic and environmental benefits are achieved, and the method plays an important role in promoting industrial circular economy development and ecological environment treatment.

The present disclosure provides a soil composition including zeolites, mineral components, activating components, and additives, wherein zeolites may include phillipsite, chabazite, and faujasite. Furthermore, mineral components may include brown tuff, coarse tuff, olivine, clay, and pyroxene, while the activating components may include calcite, smectite, volcanic glass, and feldspar. On the other hand, beneficial additives and fertilizers related additives are included in the composition of the present disclosure to improve soil health and nutrient availability. The soil composition is configured to improve plant growth and optimizing soil health for sustainable agricultural and horticultural applications. The present disclosure also provides a method for preparing the soil composition.

Systems and methods for sequestering carbon, evolving hydrogen gas, producing iron oxide as magnetite, and producing magnesium carbonate as magnesite through sequential carbonation and serpentinization / hydration reactions involving processed olivine- and / or pyroxene-rich ores, as typically found in mafic and ultramafic igneous rock. Precious or scarce metals, such nickel, cobalt, chromium, rare earth elements, and others, may be concentrated in the remaining ore to facilitate their recovery from any gangue material.

The invention belongs to the technical field of fracturing propping agent materials, and discloses a long-acting stable multi-solid-waste composite propping agent and a preparation method thereof. According to the proppant, steel slag, fly ash and granulated blast-furnace slag are used as main raw materials, a mullite-pyroxene composite mineral phase framework is formed by sintering at 1120-1260 DEG C by controlling the adding molar ratio of the raw materials, and the long-term stability of high density and non-collapsing structure under high temperature and high pressure is achieved. Fluorosilane and polyphosphinocarboxylic acid are further adopted for surface synergistic grafting, a composite film layer with hydrophobic and anti-pollution functions is constructed, stratum particle adsorption and inorganic salt scaling are remarkably reduced, and long-term smoothness of a crack flow guide channel is maintained. Results show that the proppant has excellent mechanical strength and service stability, the long-term flow conductivity retention rate in a high-temperature and high-salinity fracturing fluid environment exceeds 90%, the structural integrity is good, the compressive property reaches 69 MPa or above, and the proppant is suitable for long-term fracturing support requirements of complex reservoirs.

The invention relates to the technical field of titanium dioxide production, and provides a solidification regulation and control method for improving titanium slag acidolysis efficiency, which comprises the following steps: controlling the solidification cooling process of a titanium slag melt, cooling at a first cooling rate in a first temperature interval of anosovite phase precipitation and growth, and cooling at a second cooling rate in a second temperature interval of pyroxene phase precipitation and growth, cooling at a second cooling rate; wherein the lower temperature limit of the first temperature interval is not lower than the upper temperature limit of the second temperature interval, and the first cooling rate is larger than the second cooling rate. According to the scheme, the cooling technology matched with the precipitation growth rule of the anosovite phase and the pyroxene phase in the titanium slag is accurately controlled, the problems that solidification is uncontrollable and phase growth is poor due to an existing single cooling mode are solved, the distribution form and the interface bonding state of the two phases are optimized, and the acidolysis efficiency of the titanium slag is greatly improved.

The application discloses a component-controllable simulated moon soil preparation method based on thermal phase change and belongs to the technical field of moon soil simulation material preparation.The application realizes controllable adjustment of the content of main mineral phases (plagioclase, pyroxene, olivine and amorphous phase) through thermal melting and crystallization processes, and determines the mixing ratio in combination with a nonlinear programming model, so that the simulated moon soil is highly similar to the target moon soil in terms of mineral phase composition, microstructure, optical performance and thermal performance.The method provides a high-fidelity simulation material with adjustable components for the ground experiment of ISRU technology (such as sintering, metallurgy and in-situ 3D printing), and solves the problem that the traditional simulation material preparation method cannot perform fine component factor test design in the related technical research process.

The invention belongs to the technical field of environmental science and engineering, and particularly relates to an experimental method based on basalt mineralization and storage of CO2 reaction simulation, the experimental method based on basalt mineralization and storage of CO2 reaction simulation comprises the following specific steps: selecting a sample used for an experiment, the sample is from neonatozoic basalt in the northern part of Hainan island, the color is gray black, and the sample is selected from the sample; the ceramic has a plaque structure and a pore structure, and plaque minerals are plagioclase, pyroxene and a small amount of olivine; according to the application, neonatozoic basalt in the northern part of Hainan island is taken as an experimental object, five groups of high-temperature and high-pressure basalt-water-CO2 simulation reaction experiments of 30 DEG C, 50 DEG C, 70 DEG C, 90 DEG C and 110 DEG C are carried out, and technical means such as a scanning electron microscope (SEM), energy spectrum analysis (EDS) and inductively coupled plasma emission spectroscopy (ICP-OES) are comprehensively utilized to explore reaction characteristics of CO2 sealed by basalt under different experimental temperature conditions; the reaction mechanism of mineralizing and sealing CO2 by basalt is systematically analyzed.

The invention discloses a method for preparing mica-pyroxene composite glass ceramics through cooperation of nephrite tailings and fly ash and application of the mica-pyroxene composite glass ceramics, and relates to the technical field of glass ceramics. The method comprises the following steps: (1) respectively grinding nephrite tailings and sodium cryolite, and controlling the water content of fly ash to be less than or equal to 1%; (2) mixing the ground nephrite tailings and sodium cryolite with fly ash; (3) melting the materials mixed in the step (2); (4) carrying out molding treatment on the molten material, and then carrying out annealing treatment and crystallization treatment at 5 DEG C; or the fused material is subjected to molding treatment and then is sintered. The product prepared through the method is excellent in performance, the bending strength reaches 130-150 MPa, the hardness reaches 650-700 HV, and corrosion resistance and insulativity are good.

This invention discloses a method for preparing high-density, high-compactness polycrystalline pyroxene diorite aggregates, wherein the pyroxene diorite sample powder is completely sealed in a vacuum of 10... –3 The sample chamber was placed in a steel cladding; the cladding was then placed inside the graphite furnace cylinder of a hot isostatic pressing (HIP) apparatus, and a graphite sealing cap was placed on top. Using argon as the pressure transfer medium, a multi-gradient cylinder heating and pressurization method was employed to raise the temperature inside the cylinder sample chamber to 500 °C and the pressure to 86.4 MPa, and maintained at this temperature and pressure for 10 hours. A cooling rate of 11.41 °C / min and a depressurization rate of 0.62 MPa / min were then used to lower the temperature inside the cylinder sample chamber to 169 °C and the pressure to 68.5 MPa. Finally, the pressure was released and the sample was cooled to room temperature to obtain a polycrystalline pyroxene diorite aggregate sample. This method fills the technical gap in the preparation of large-volume experimental samples of highly dense polycrystalline pyroxene diorite aggregates under high temperature and high pressure conditions.

The invention discloses a method for testing in-situ iron isotope composition of silicate minerals of an iron-poor mantle, and relates to the technical field of isotope analysis. According to the method, high-energy femtosecond laser and a multi-receiving inductively coupled plasma mass spectrometer (MC-ICP-MS) are combined for the first time to carry out in-situ iron isotope analysis on iron-poor mantle silicate minerals such as monohectorite, rhomboxene and garnet. The method can ensure that higher analysis sensitivity can still be maintained when a low-iron-content sample (FeO is less than 3wt%) is measured, so that higher analysis precision is ensured. Through the method, a series of glass standard samples and natural samples composed of monohectorite, rhomboxene and garnet matrixes synthesized in a laboratory are accurately determined. The method fills the blank of laser in-situ measurement of Fe isotope composition of the iron-poor slow silicate mineral, and has a wide application prospect.

This invention relates to a nuclear-grade air filter in the field of air filter technology. The nuclear-grade air filter includes a reusable frame and a filter element. The reusable frame is made of inorganic non-metallic mineral fiber composite material. The reusable frame includes two side plates, two top plates, and several grid plates. The two side plates are vertically arranged between the two top plates. Side posts are provided at the joints between the side plates and the top plates. The side plates and top plates are fixed together by a mortise and tenon structure formed by the side posts. The filter element is arranged in a corrugated structure within the reusable frame. Several grid plates are arranged on the front and rear end faces of the reusable frame. The corners of the filter element are fixed by the grid plates. The inorganic non-metallic mineral fiber composite material includes one of silicate minerals or basalt and basaltic inorganic non-metallic stone, or a modified composite material thereof. The silicate minerals are composed of at least one of plagioclase, silica, and pyroxene, and the silicate mineral content is at least 20%.

The application discloses a basic rock temperature prediction method based on an extreme random forest algorithm, and the method comprises the following steps: collecting basic magma experimental data, constructing a database containing experimental temperatures and mineral-melt compositions under a monoclinic pyroxene-melt system, removing non-equilibrium and extreme experimental data in the database according to preset conditions to obtain an original data set, performing data preprocessing to obtain an effective data set, constructing a temperature prediction model based on the extreme random forest algorithm, using the effective data set to preliminarily train the model, combining combined feature selection and hyperparameter optimization to determine the optimal feature combination and hyperparameter combination, obtaining a final temperature prediction model, and performing temperature prediction. The method constructs a temperature prediction model which does not depend on water content as a feature input, effectively avoids the technical difficulties in the determination of water content in natural minerals and rocks, and the method does not depend on prior thermodynamic assumptions, and has good adaptability and universality.

The invention relates to the technical field of lunar soil preparation, in particular to a simulated lunar soil preparation method based on nonferrous metal tailings. Comprising the following steps: grinding and screening nonferrous metal tailing powder; mixing the non-ferrous metal tailing powder with the plagioclase powder, the pyroxene powder, the olivine powder and the hematite powder in proportion, and grinding; uniformly mixing the mixed powder with graphite powder to obtain composite powder containing elemental iron, and uniformly mixing ilmenite powder with carbon black powder to obtain composite powder containing coexisting elemental iron and ilmenite; and uniformly mixing the two kinds of powder, performing low-intensity magnetic separation, ball-milling and screening, and mixing according to a specified particle size distribution ratio to obtain the lunar soil simulant. Not only is efficient resource utilization of the nonferrous metal tailings realized, but also simulated lunar soil with matched components and stable performance can be prepared.

This invention discloses a method for preparing high-purity bulk polycrystalline orthorhombic pyroxene under hot isostatic pressing conditions. The method includes: sealing orthorhombic pyroxene sample powder under a vacuum of 10... –3 The sample chamber was placed in a steel bladder; the steel bladder was placed inside the graphite furnace cylinder of the high-pressure vessel of a hot isostatic pressing (HIP) apparatus, and a graphite sealing cap was placed on top; argon was used as the pressure transmission medium; a multi-gradient cylinder heating and pressurization method was used to raise the temperature inside the sample chamber to 1140 °C and the pressure to 93.8 MPa, and the temperature and pressure were maintained for 4.5 hours; a multi-gradient cylinder cooling and depressurization method was used to lower the temperature inside the sample chamber to 161 °C and the pressure to 48.5 MPa; finally, the pressure was released and the temperature was lowered to room temperature to obtain a polycrystalline orthorhombic pyroxene aggregate; this technique fills the technical gap in the preparation of large-volume experimental samples of high-density polycrystalline orthorhombic pyroxene aggregates under high temperature and high pressure conditions.

The invention discloses a preparation method of component-controllable lunar soil simulation based on thermally induced phase change, and belongs to the technical field of lunar soil simulant preparation. Controllable adjustment of the content of main mineral phases (plagioclase, pyroxene, olivine and amorphous phase) is realized through thermally induced melting and crystallization processes, and a mixing ratio is determined in combination with a nonlinear programming model, so that the simulated lunar soil highly simulates target lunar soil in mineral phase composition, microstructure, optical performance and thermal performance. According to the method, a high-fidelity simulation material capable of regulating and controlling components is provided for ground experiments of ISRU technologies (such as sintering, metallurgy and in-situ 3D printing), and the problem that fine component factor experimental design cannot be carried out in the related technology research process of a traditional simulant preparation method is solved.

The present application relates to the jade detection technical field, especially to a kind of old pit seed material jade secondary color cause identification method based on ternary color source structure and ultraviolet-visible absorption spectrum.The present application discloses the real cause of old pit jade secondary color for the first time, scientifically confirms for the first time, and the secondary color source of old pit jade is the ternary combination structure of color dot, color net and color line, and the color of old pit jade is the optical reflection generated by color source color filling on the colorless transparent solid-state crystalline wax in sodium aluminum pyroxene crystal combination structure and dot net pattern, which deepens the understanding of jade hecolor mechanism.The present application combines in-situ microstructure observation with ultraviolet-visible absorption spectrum analysis for the first time, creates dual jade identification method of structure+spectra, overcomes the limitation of single reliance on absorption spectrum intensity determination, realizes the accurate discrimination of jade color cause, and provides new ideas and directions for more accurate jade detection.

The invention discloses a preparation method of high-compactness bulk polycrystalline peridotite under a hot isostatic pressure condition. The preparation method comprises the following steps: sealing powder of a peridotite sample in a steel ladle sleeve with the vacuum degree of 10 <-3 > Pa; the steel ladle sleeve is placed in a graphite furnace cylinder body of a high-pressure container of hot isostatic pressing equipment and covered with a graphite sealing cover; argon is used as a pressure transmitting medium, the temperature in a cylinder body sample bin is increased to 1180 DEG C and the pressure in the cylinder body sample bin is increased to 122.4 MPa in a multi-gradient cylinder body temperature and pressure increasing mode, and heat preservation and pressure maintaining are conducted for 4.7 hours; a multi-gradient cylinder body temperature and pressure reduction method is adopted to reduce the temperature in a cylinder body sample bin to 162 DEG C and reduce the pressure to 52.3 MPa along with the temperature and pressure in the cylinder body sample bin; and finally, releasing the pressure, and cooling to room temperature to obtain the polycrystal peridotite polymer. The technical blank of preparation of the large block super-basic peridotite experimental sample of the high-compactness polycrystal peridotite polymer under the conditions of high temperature and high pressure is solved.