861 results about "Mineral particles" patented technology

Solar-reflective roofing granules having deep-tone colors are formed by coating base mineral particles with a coating composition including an infrared-reflective pigment. Color is provided by colored infrared pigment, light-interference platelet pigment, or a metal oxide.

Solar-reflective roofing granules having improved solar heat-resistance are formed by coating colored mineral particles with a coating composition including titanium dioxide nanoparticles.

Described are implantable, malleable medical materials comprising mineral particles, insoluble collagen fibers, and a gel-forming polysaccharide component and/or another added gel-former. The malleable medical materials can be used treat bone or other tissue defects in patients, including in conjunction with biologically active factors such as osteogenic proteins. Also described are methods and materials that can be used to prepare the malleable medical materials.

Solar reflective roofing granules include a binder and inert mineral particles, with solar reflective particles dispersed in the binder. An agglomeration process preferentially disposes the solar reflective particles at a desired depth within or beneath the surface of the granules.

The present invention relates to biodegradable polymer compositions comprising poly(lactic acid) and co-polyester polymer with adipic acid mixed with organic peroxide and mineral particles. In addition, the present invention relates to products made on the basis of such compositions, such as molded and extruded articles.

A surface decorative material color sand and its production are disclosed. The color sand consists of basic material and surface coated chromatograph, the basic material consists of quartz, mineral particle or waste slag particle, the chromatograph coating formula consists of emulsified frit, inorganic pigment, swelled ground, Suzhou ground and inorganic binder. The production is carried out by: 1) breaking, screening, washing and drying basic material, and obtaining particle with certain grain size; 2) mixing water with emulsified frit, inorganic pigment, swelled ground, Suzhou ground and inorganic binder by proportioning, ball grinding, and obtaining coating mill base; 3) adding organic disperser, mixing organic disperser with mill base, chromatographic coating mineral particle with certain grain size; 4) drying particle with mill base coat, putting into external heating rotary kiln, and calcining with calcining temperature 500-950deg.C and heating time 0.5-1hr. It achieves simple production, low calcining temperature and good color.

The invention belongs to the technical field of mineral engineering and provides a mineral processing technology for recycling fluorite from baotite, magnetite and tailing. In the tailing, mineral particle size of the fluorite is thin, iron-bearing mineral, rare-earth mineral, gangue mineral and the fluorite mineral are closely symbiotic and floatability of minerals such as rear earth, barite, apatite, calcite and dolomite is close to the fluorite mineral, so that separation of the fluorite mineral is difficult. According to the mineral processing technology for recycling the fluorite from the baotite, the magnetite and the tailing, priority desulfuration, rear earth flotation, ore grinding, iron selection through magnetic separation, fluorite selection through direct flotation and a reverse flotation sorting technology are performed on the magnetite and the tailing to enable pyrite, the rare earth, the iron-bearing mineral and the fluorite to be picked out in sections, efficient, high selective, easy-to-operate inhibitor and collecting agent combination is utilized in sorting of fluorite which is mostly performed monomer separation, so that fine fluorite of high grade and high recovery rate is obtained, a purpose of synthetically recycling valuable minerals is achieved, and effective separation of the fluorite mineral and the gangue mineral is achieved.

Fiber-reinforced separators/solid electrolytes suitable for use in a cell employing an anode comprising an alkali metal are disclosed. Such fiber-reinforced separators/solid electrolytes may be at least partially amorphous and prepared by compacting, at elevated temperatures, powders of an ion-conducting composition appropriate to the anode alkali metal. The separators/solid electrolytes may employ discrete high aspect ratio fibers and fiber mats or plate-like mineral particles to reinforce the separator solid electrolyte. The reinforcing fibers may be inorganic, such as silica-based glass, or organic, such as a thermoplastic. In the case of thermoplastic fiber-reinforced separators/solid electrolytes, any of a wide range of thermoplastic compositions may be selected provided the glass transition temperature of the polymer reinforcement composition is selected to be higher than the glass transition temperature of the amorphous portion of the separator/solid electrolyte.

An underground coal gasification method. The method comprises disposing multiple injection wells (3) and gas collection wells (4) in a gasification operation zone; adding a catalyst and a propping agent into injection wells and gas collection wells by means of a fluid medium; fracturing and reforming the coal layer using a fracturing device to form large areas of fissures and cracks; forming gasification paths in the form of directional wells between the injection wells and gas collection wells; adding a gasification agent, a catalyst, and water through the injection wells to cause coal layer combustions and chemical reactions; collecting at the gas collection wells the gas produced by means of collection devices. The fissure paths between the wells formed by reforming large fractures, and the metal mineral particles used as a propping agent for the paths between wells effectively enable the maintenance of the effective communication in the injection well network for long durations; the metal mineral particles also function as a catalyst and an aggregating agent during gasification, thereby substantially enhancing the coal gasification volume.

The invention discloses a passivator for repairing a compound heavy metal polluted farmland. The passivator comprises the following components in parts by weight: 15-25 parts of rock-type mineral particles, 8-15 parts of nano-iron, 5-15 parts of a calcium magnesium phosphate fertilizer, 25-40 parts of coal ash, 15-25 parts of biochar and 10-15 parts of red mud. The passivator for repairing the compound heavy metal polluted farmland disclosed by the invention can effectively reduce the plant effectiveness of heavy metals lead, arsenic, cadmium and chromium in soil, and meanwhile, the soil nutrients are improved and the physical and chemical properties of the soil are maintained.

The invention relates to a three-dimensional particle structure reconstruction method based on a rock-core two-dimensional particle image. Aiming at a three-dimensional modeling problem based on the rock-core two-dimensional image, the mineral particle information contained in the two-dimensional image is utilized to deduce three-dimensional particle structure information corresponding to a two-dimensional particle structure. Particularly, a rock-core particle microstructure reconstruction algorithm is proposed based on the combination of a simulated annealing algorithm and a particle growth algorithm, so that the reference images of the reconstructed three-dimensional particle structure and the two-dimensional particle structure have similar morphologic distribution, and the rock-core particle structure characteristics can be captured better; the three-dimensional distribution of mineral particles in the microstructure represents the spatial distribution of the mineral particles, and the influence of different mineral constituents on the structural performance of the three-dimensional particle structure is quantized based on the three-dimensional particle structure; the reconstructed three-dimensional microstructure provides a better explanation for the real rock-core microstructure; and the three-dimensional particle structure reconstruction method can be applicable for research on the electrical characteristics and seepage characteristics of the rock-core microstructure, and has practical values.

The invention relates to a self-sticking macromolecular pre-laid waterproof roll material and a preparation method. The waterproof roll material comprises a sheet macromolecular base material layer, a hot-melt pressure-sensitive adhesive layer formed on the sheet macromolecular base material layer and an anti-adhesion layer arranged on the hot-melt pressure-sensitive adhesive layer, wherein the anti-adhesion layer is anti-adhesion mineral particles, and the anti-adhesion mineral particles are formed by adding an additive to special white cement, performing even mixing and then performing hydration curing and smashing. The anti-adhesion mineral particles adopted by the waterproof roll material are artificially synthesized mineral particles and have larger specific surface area than natural mullite sand, has strong bonding power with a hot-melt pressure-sensitive adhesive and has stronger antiultraviolet capability. The particles have good integration with post-cast concrete, the mineral particles have a secondary hydration function, concrete and the mineral particles can form an effective integral structure after the roll material is cast with the concrete, accordingly water is prevented from permeating into a bonding interface of the concrete and the mineral particles from gaps between the mineral particles and the concrete, and a water breakthrough phenomenon is effectively controlled.

The present invention provides for a method and apparatus for breaking mineral particles comprising suspending the particles in a liquid flowing in a conduction path, the liquid comprising a dielectric constant higher than the particles and wherein an electric voltage pulse is sent to electrodes to pass an electric field in the mineral particles with sufficient stress to fracture the mineral particles.

Embodiments of an hydraulic opposed jet mill are disclosed which may be used to crush various minerals, including mica, or other materials to sub-micron size. At least one positive displacement pump forces an incompressible liquid, such as water, through a pair of opposed jets such that the two streams of water collide between the jets. A slurry of an incompressible liquid, such as water, and the mineral to be crushed is introduced into the jets at a point near the outlet end of the jets. The entrained mineral particles are forced out of the jets with great energy which causes multiple collisions and pulverization. In a second embodiment of the instant invention the slurry strikes an impingement plate rather than an opposed slurry stream.

The invention provides a synthetic filter material synthesized through inter-amalgamation and lamination of multi-fiber filter materials and wood or mineral particle filter materials, a filter element and manufacturing method thereof, and an oil filter matched with an internal combustion engine. The filter element is free of filter paper and a metal support frame, the filter element frame and the cover plates of the filter element are made of modified nylon materials, the whole sealed filter element is formed through ultrasonic welding, the filter material is filled between 3-8 groups of blades and the frame, and the filter element does not fracture and deform after 20,000 times of impact of pulse anti-fatigue detection under the pressure of 1.6MPa. The filter element is stable and solid in structure, high-temperature and high-pressure engine oil resistance of the filter element is enhanced, the synthetic material of the filter element can filter impurities such as metal abrasive dust and carbon powder generated during combustion of an engine and mixed into the engine oil, and gel gradually generated by the engine oil to the maximum extent, the plant particle filter materials of the filter element contain antioxidant which releases slowly and can perform oxidation-reduction on online engine oil, the replacement mileage of the lubricating engine oil and the oil filter is prolonged to 30,000-100,000 kilometers, and emission of harmful tail gas is reduced.

A coating composition including an inorganic sol material and an organic colorant is applied to mineral particles and cured at a temperature less than 200 degrees Celsius.

This invention has as its object a non-woven product that contains organic and/or mineral particles and its process for production.

Flexible non-woven product that has a volume density that is less than 1 and that is formed by at least two layers of synthetic fibers or filaments superposed in the Z direction that is perpendicular to the XY plane of said product, having undergone at least one mechanical or hydraulic needling operation, whereby said non-woven product also integrates particulate feedstocks in the form of mineral and/or organic particles distributed in a monomodal or multimodal manner in this product and at least partially coated or encapsulated by a binding material that can at least point-connect the filaments or fibers to one another,

• • non-woven product that is characterized in that at least one population or fraction of organic and/or mineral particles, called “large particles,” has a size such that:

3×(√{square root over (SMf)})³≦v, preferably 5×(√{square root over (SMf)})³≦v,

• • where SMf corresponds to the mean cross-section of the fibers or filaments that form the layers of the non-woven product, and v represents the mean individual volume of the organic or mineral particles.

Mineral samples for use in analytical instruments are created by a system that greatly reduces the sample preparation time and facilitates automation. For example, in some implementations, rather than grinding to expose the interior of mineral particles in sample plug containing mineral particles in an epoxy compound, the sample plug is sliced with a saw, which more rapidly provides in many applications a sufficiently smooth surface on the exposed particle surfaces for observation. Rather than slowly mixing a slow curing epoxy to avoid introducing bubbles into the sample plug, some implementations use a fast settle fixative and a mechanical mixture that avoid bubbles.

The invention discloses a process for producing high calorific value water-coal slurry by utilizing coal or coal gangue. The coal or the coal gangue comprises incombustible minerals and combustible containing carbon-hydrogen. The process comprises the following steps: A, wet grinding coal or coal gangue in water until an average particle size of particles is smaller than 500 micrometes, adding additives in a continuous wet grinding process, uniformly dispersing the additives, and obtaining micro-nano water-coal slurry; B, introducing micro-bubbles with a diameter smaller than 200 micrometers into the micro-nano water-coal slurry, wherein the mineral particles bonded with the additives are agglomerated and sunken as a bottom stream, wherein the combustible particles containing the carbon-hydrogen floats along with the bubbles to be a floating stream, so that the separation of the mineral particles and the combustible particles can be realized; and C, separating the combustible particles containing the carbon-hydrogen from the floating stream, and preparing the high calorific value water-coal slurry with a calorific value higher than 4000kcal/kg by virtue of press filtering. The invention also discloses a coal gasification process comprising the high calorific value water-coal slurry preparation process, so that inferior coal can be used for gasifying the water-coal slurry at first.