496 results about "Pumice" patented technology

Cementitious compositions and methods for making same, in which the cementitious compositions include 35-60 wt. % cementitious reactive powder (also termed Portland cement-based binder), 2-10 wt. % expanded and chemically coated perlite filler, 20-40 wt. % water, entrained air, and optional additives such as water reducing agents, chemical set-accelerators, and chemical set-retarders. In addition, the lightweight cementitious compositions may contain 0-25 wt. % on a wet basis secondary fillers such as expanded clay, shale aggregate, and pumice.

A process for sequestering carbon dioxide from the flue gas emitted from a combustion chamber is disclosed. In the process, a foam including a foaming agent and the flue gas is formed, and the foam is added to a mixture including a cementitious material (e.g., fly ash) and water to form a foamed mixture. Thereafter, the foamed mixture is allowed to set, preferably to a controlled low-strength material having a compressive strength of 1200 psi or less. The carbon dioxide in the flue gas and waste heat reacts with hydration products in the controlled low-strength material to increase strength. In this process, the carbon dioxide is sequestered. The CLSM can be crushed or pelletized to form a lightweight aggregate with properties similar to the naturally occurring mineral, pumice.

A cement composition comprises fine pumice particles, for use in cementing subterranean wells, and oil and gas wells in particular. The pumice containing cement blends feature enhanced compressive strength, and favorable compressive strength to Young's Modulus ratios. Lightweight cement blends containing pumice, and their use in cementing oil and gas wells are also described.

This invention relates to filterable composite adsorbents comprising one or more adsorbent components and one or more filtration components, and methods for preparing and using same. More particularly, this invention pertains to filterable composite adsorbents and filterable composite adsorbent products which are suitable for use in filtration applications, and which comprise one or more microparticulate or colloidal adsorbent components selected from the group consisting of silica gel, fumed silica, neutral clay, alkaline clay, zeolite, solid catalyst, alumina, adsorbent polymer, alkaline earth silicate hydrate, and combinations thereof, which bear the property of adsorption, which are intimately bound to one or more functional filtration components selected from the group consisting of biogenic silica (e.g., diatomite, rice hull ash, sponge spicules), natural glass (e.g., expanded perlite, pumice, expanded pumice, pumicite, expanded obsidian, expanded volcanic ash), buoyant glass, buoyant polymer, cellulose, and combinations thereof, which bear a distinguishing porous and intricate structure and buoyancy suitable for filtration.

The invention discloses cat litter comprising a composition prepared from the following components in percent by weight: 50-80% of inorganic clay, 5-15% of silica gel, 5-20% of organic substrate and 8-20% of mineral matter, wherein the inorganic clay is selected from one or a mixture of attapulgite, bentonite, kaolinite and sepiolite; the organic substrate is selected from one or a mixture of corncob, corn, wheat, clover, peanut hull, walnut shell, pine wood shavings and broadleaved tree wood shavings; and the mineral matter is selected from one or a mixture of perlite, diatomite, pumice and other low-density mineral matters. The cat litter disclosed by the invention has the following advantages of largely strengthened adsorption deodorization capacity due to the addition of the silica gel component, stronger deodorization capacity by utilizing the adsorbability of natural materials, natural fragrance, small weight and strong caking capability, in particular no dust and easiness for treatment; and the cat litter disclosed by the invention is 40% lighter than the traditional bentonite cat litter.

A process for forming a strong, low-density proppant, which process includes heating pumice particulates, or shaped agglomerates thereof, so as to form heat-treated pumice particulates, or heat-treated, shaped pumice agglomerates, having an apparent density of 2.4 or less and a crush resistance of no more than 10% fines at 4000 psi. Proppants, and well treatment fluids comprising proppants, meeting these characteristics and processes for treating subterranean formations using fluids which include such proppants are also described.

The invention relates to a composite material with anti-bacterial and purifying functions and a preparation method of the composite material, and belongs to the technical field of environmental-friendly materials. The composite material with the anti-bacterial and purifying functions comprises raw materials in parts by weight as follows: 70-95 parts of a mineral composite adsorption material, 3-25 parts of a photocatalytic degradation material, 2-15 parts of a rare earth inorganic anti-bacterial material and 1-10 parts of an additive, wherein the mineral composite adsorption material is prepared from sepiolite, diatomite, medical stone and attapulgite; the photocatalytic degradation material is prepared from titanium oxide, tourmaline and far infrared ceramic powder; the rare earth inorganic anti-bacterial material is prepared from zinc oxide, cerium oxide and silver oxide; the additive is a mixture of activated carbon, carboxymethylcellulose and pumice powder. The composite material with anti-bacterial and purifying functions has high adsorption and decomposition rate, can be resistant to water and damp and has excellent anti-bacterial effect. Meanwhile, the invention provides the preparation method. According to the preparation method, the cost is low, the amount of produced wastewater is low, and powder is simple and convenient to apply.

Cementitious compositions and methods for making same, in which the cementitious compositions include 35-60 wt. % cementitious reactive powder (also termed Portland cement-based binder), 2-10 wt. % expanded and chemically coated perlite filler, 20-40 wt. % water, entrained air, and optional additives such as water reducing agents, chemical set-accelerators, and chemical set-retarders. In addition, the lightweight cementitious compositions may contain 0-25 wt. % on a wet basis secondary fillers such as expanded clay, shale aggregate, and pumice.

Luminescent polymers are prepared from thermosetting unsaturated polyesters, suspending fillers and phosphorescent pigments and utilized to make gel coated articles and molded, cast and fiberglass reinforced plastic (FRP) articles. The luminescent polymers show bright and long-lasting photoluminescent afterglow, strong thermostimulation of afterglow by heat and electroluminescent properties. The preferred thermosetting unsaturated polyester resins are prepared by condensing mixtures of ethylenically unsaturated and aromatic dicarboxylic acids and anhydrides with dihydric alcohols and a polymerizable vinylidene monomer. Preferred suspending fillers and thixotropic modifiers include silica, microspheres, glass fibers and other short fibers, nepheline syenite, feldspar, mica, pumice, magnesium sulfate, calcium carbonate, bentonite and the various clays and thixotropic modifiers and mixtures thereof. Preferred phosphorescent pigments include alkaline earth aluminate phosphors, zinc sulfide phosphors and mixtures of these phosphors.

The current invention is concerned with methods and compositions for the removal of arsenic contamination from water. A method for binding As to oxidized metal coated pumice and method for making the same are disclosed. Water filters comprising oxidized metal coated pumice, such as oxidized iron coated pumice, are also provided.

A hybrid litter for pets and a method of making a hybrid litter for pets is provided. The litter includes a hybrid composition of inorganic clay, silica gel, and biodegradable materials, such as corn, wheat, alfalfa, peanut hulls, ground walnut shells, sawdust, and mixtures thereof and a low density mineral, such as perlite, diatomaceous earth, or pumice.

The invention discloses a foam glass and a preparation method thereof. The main technique steps are that fly ash and waste glass are mixed and rubbed; the promoters composited by calcium carbonate, potassium nitrate, sodium nitrate, sodium carbonate, lithium carbonate, water glass and fibrin are added; the powder that has been rubbed into mould to mold is put; shaped product is sent to kiln to be dried and fired under high temperature, is annealed and finally cut, after the steps, the foam glass is made. The preparation technique is simple, and the production cost is reduced by choosing fly ash and waste glass instead of pearl rock, pumice, isinglass and other non-mine material, and the technique improves the use of solid wastes and is beneficial to environment protection.

The invention relates to a building material, and particularly relates to a light fly ash multi-row hole self-thermal insulation building block. The technical scheme is that: according to the light fly ash multi-row hole self-thermal insulation building block, through holes are uniformly distributed on a cuboid light fly ash building block. The light fly ash building block is prepared by adopting portland cement as a gelling material, adopting fly ash, crude ash, ceramsite or slag, pumice, perlite or vermiculite, sawdust, polyphenyl particles, building adhesives, humectants and additives as filling materials, diluting and dissolving the mixture with water, mixing, stirring, extruding, and curing; the cross sections of the through holes are rectangular, and the arrangement form of the through holes is multi-section, multi-layer, parallel, and interactive. With the combination of the structure of the multi-row hole self-thermal insulation building block and the light composite fly ash material, the performance of the building block such as heat preservation, light weight, thermal insulation, sound insulation, fire prevention, durability, and the like is greatly improved; traditional clay bricks, aerated blocks and traditional outer wall insulation methods are substituted; and national requirements for building energy saving are fully met.

This invention relates to filterable composite adsorbents comprising one or more adsorbent components and one or more filtration components, and methods for preparing and using same. More particularly, this invention pertains to filterable composite adsorbents and filterable composite adsorbent products which are suitable for use in filtration applications, and which comprise one or more microparticulate or colloidal adsorbent components selected from the group consisting of silica gel, fumed silica, neutral clay, alkaline clay, zeolite, solid catalyst, alumina, adsorbent polymer, alkaline earth silicate hydrate, and combinations thereof, which bear the property of adsorption, which are intimately bound to one or more functional filtration components selected from the group consisting of biogenic silica (e.g., diatomite, rice hull ash, sponge spicules), natural glass (e.g., expanded perlite, pumice, expanded pumice, pumicite, expanded obsidian, expanded volcanic ash), buoyant glass, buoyant polymer, cellulose, and combinations thereof, which bear a distinguishing porous and intricate structure and buoyancy suitable for filtration.

The invention relates to an automatic heat-insulation building block for an outer wall, which is prepared from 4 to 5 parts of slag cellucotton of a steel smelting high-temperature furnace, 1.5 to 2 parts of silicon ash, 2 to 3 parts of natural pumice stone cotton wool and 1.6 to 2 parts of cement according to the technology of concrete hollow building blocks. The invention uses two industrial waste materials and one natural material as heat insulation materials which have the characteristic of low heat conduction coefficients and account for more than 80 weight percentages of the total weight of the material, thus, the invention has excellent heat insulation performance, and the slag cellucotton of a steel smelting high-temperature furnace has excellent strength and can form skeleton support in the finished product to enable the finished product to have excellent pressure resistant strength. Because 55 percent to 60 percent materials of the automatic heat-insulation building block are industrial slag, the material cost can be greatly lowered. In material selection, the invention avoids the material with high volume weight, thus, the invention also has the characteristic of light weight. Detection shows that the invention has the heat conduction coefficient of 0.076 W / m*k and hihg cost performance.

The invention discloses a natural solid cleaning agent for cleaning stains on hard surfaces of objects, which is prepared from the following raw material in percentage by weight: 6 to 50 percent of kaolin, 4 to 36 percent of zeolite, 7 to 45 percent of calcite powder, 3 to 40 percent of pumice powder, 4 to 55 percent of feldspar powder, 2 to 17 percent of kieselguhr, 3 to 22 percent of montmorillonite powder, 4 to 40 percent of talcpowder, 1 to 15 percent of saponin, 3 to 18 percent of white carbon black and 0 to 40 percent of water. The natural solid cleaning agent has desirable cleaning effect on various stains, such as oil stains, sweat stains, tea stains, juice stains, milk stains, blood stains, ink stains, ash stains and dust stains on hard surfaces of metal, ceramic, wood, glass, fiber plates and stone plates. The raw materials are natural powder and plant extracts. The cleaning agent has high biodegradability and is safe, environmentally-friendly, pollution-free and convenient to use.

The invention relates to a sprayed rigid foam polyurethane waterproof fireproof heat insulation wall and a construction method thereof. The structure of a composite layer of the wall from the inside to the outside in order is as follows: a base course wall (1), an interfacial agent plugging lower layer (2), a sprayed rigid foam polyurethane waterproof heat insulation layer (3), an interfacial agent seal course (4), an inorganic lightweight aggregate cement mortar screeding cracking resistant layer (5) which is buried with alkali-resistant glass fiber gridding cloth (6), a flexible waterproof layer (7) and a finishing coat (8), which are solidified into a whole, wherein, the dry powder of the inorganic lightweight aggregate cement mortar contains inorganic lightweight aggregate (one or the mixture of expanded vermiculite, obturator perlite or pumice) with 10-25 weight percent and the grain diameter less than or equal to 1 mm. The wall of the invention has light self-weight and good integrity, and solves the problem of bad waterproof heat insulation of the whole wall due to the rugged surface of the sprayed rigid foam polyurethane heat insulation layer. The construction method is easy to operate and low in cost.

The invention relates to a preparation method of a porous silicon / graphite / carbon composite negative electrode material for a lithium-ion secondary battery. A silicon source of the composite materialis natural mineral soil: namely kaolinite, montmorillonite, mica powder, wollastonite, vermiculite powder, pumice powder and coal gangue. The silicon source is reduced into elemental silicon by usinga metal element or alloy powder and anhydrous metal chloride under a mild condition, and the reduced porous silicon, graphite and an organic carbon source are subjected to high-energy ball mill mixing. The reduction temperature is low, the inherent pore structure of the natural mineral soil is effectively reserved and the prepared silicon material has relatively high specific surface area and abundant pores and has excellent electrochemical properties. Volume expansion can be effectively relieved through the inherent pore characteristic of the natural mineral soil; and the prepared composite material has higher charge-discharge capacity and stability. Especially the kaolinite is wide in source and low in price, so that the preparation cost of the battery material is greatly reduced. The porous silicon / graphite / carbon composite negative electrode material is friendly to environment, simple in preparation method, instrument and equipment and suitable for industrial production.

A prophy cup has an outer surface with dimples formed therein. The dimples increase the turbulent flow in a boundary layer proximate to the surface. The increased turbulent flow reduces the separation of fluid (a slurry of saliva, blood and pumice) at the boundary layer to minimize the quantity of fluid ejected from the surface. A dental handpiece housing is configured to split longitudinally so that a wiper is positioned proximate to the outer surface of the prophy cup. The wiper removes slurry as the prophy cup rotates during a dental cleaning procedure to further reduce the quantity of fluid ejected from the surface during the procedure.

The invention relates to cat litter serving as padding for small animals. The external layer of the internal core of the cat litter is struck to a clay layer and made of perlite, pumice, river sand, rice hull or medical stone. Compared with the similar product, the cat litter has a multilayer structure, the internal core is made of light and low-price perlite, pumice or other hard materials, the clay layer and the mixed soil layer can be rapidly and easily stuck to the external layer of the internal core of the cat litter with high producing efficiency, and the water content of the product before being dried is reasonable, the product can be dried rapidly without high temperature, particularly, the cat litter with the outmost layer being stuck to the mixed clay layer contains fiber, has low dust content, improved viscosity and good utilization effect and is convenient to clean, environmental friendly and sanitary.

The invention discloses multi-phase combined lightweight aggregate concrete and a preparation method thereof. The multi-phase combined lightweight aggregate concrete is prepared from the following raw materials in part by weight: 1 part of cement, 0.40 to 0.50 part of fly ash, 1.836 to 2.219 parts of pumice sand, 0.028 to 0.043 part of corn straw fibers, 0.006 to 0.008 part of polyphenyl particles, 0.23 to 0.33 parts of rubber particles, 0.010 to 0.015 part of additive, 0.005 to 0.007 part of foaming agent, and 0.50 to 0.55 parts of water. The preparation method comprises the following steps:1, preparing thin-coating pumice sand and thin-coating straw fibers; 2, performing interference treatment of polyphenyl particles and rubber particles; 3, uniformly stirring the cement, fly ash, water, additive and thin-coating pumice sand; and 4, adding the polyphenyl particles, rubber particles and thin-coating straw fibers in turn, and continuing to stir. When the method is used, the mechanical performance of the lightweight aggregate concrete can be improved effectively, the thermal-insulation and heat-preservation performance is enhanced, and production cost is lowered.

The invention relates to a micro-pore foaming glass pumice stone, which is characterized by being prepared by carrying out high-temperature heating and foaming, and cooling on a foaming mixture of components according to weight percentage of 85-95 of waste glass grains, 1-10 of marble powder and 1-10 of quick lime. The diameter of a micro-pore of the micro-pore foaming glass pumice stone is 0.23-5mm. The invention further relates to a preparation method of the micro-pore foaming glass pumice stone. The micro-pore foaming glass pumice stone is obtained by regenerating and utilizing waste glass and is a novel material; and the micro-pore foaming glass pumice stone has the advantages of no pollution, light weight, water permeability, water-retaining property, ventilation, fire resistance (non-combustibility and fireproof property), heat insulation property and long-period effectiveness.

Embodiments of the present invention provides fiberizable glass compositions formed from batch compositions comprising significant amounts of one or more glassy minerals, including perlite and / or pumice.

The invention belongs to the field of preparation of environmental-friendly absorbing materials and discloses a modified pumice absorbing material and a preparation method as well as application of the modified pumice absorbing material, wherein the pumice is modified by utilizing active ingredients in red mud. The preparation method comprises the following steps of: after soaking pumice particles with grain size of 2-10 mm by using a nitric acid solution, cleaning by using water, and then filtering, drying, roasting and cooling to obtain a pumice absorbent to be modified; adding the red mud into the nitric acid solution, stirring for reaction for 30-90 minutes, and filtering to obtain red mud impregnation liquid; putting the pumice absorbent to be modified into the red mud impregnation liquid, soaking at 60-80 DEG C for 4-8 hours, filtering and drying, heating to 1000-12000 DEG C by means of a procedure for roasting, and cooling to obtain the modified pumice absorbing material. The material has the advantages of recycling property, widely and easily obtainable raw materials, low cost, good treatment effect and higher removal rate in particular for total nitrogen and total phosphorus in the sewage, and can be used for secondary and deep treatment of all kinds of sewage, reuse treatment of recycled water and the like.

The invention belongs to the field of an adsorbent, particularly relates to a compound adsorbent grain for purifying tail gas generated from incineration of organic wastes of construction industry, and also relates to a production method of the compound adsorbent grain. Inorganic mineral raw powder is mixed with pure water and then is subjected to the processes of extruding molding and baking shaping, so that the compound adsorbent grain is obtained. The compound adsorbent grain comprises the following components by weight percent: 10%-25% of pumice powder, 10%-25% of diatomite powder, 20%-40% of activated carbon powder and 20%-40% of attapulgite clay powder. The fineness of the inorganic mineral raw powder is not less than 200 meshes. The production method comprises the following steps: placing the raw powder in proportion (weight) based on the formula into a mixer for primarily mixing; mixing with the pure water, the weight of which is 20% of the total weight of the raw powder; extruding and molding; drying; and lastly, baking at 290-310 DEG C, thereby shaping and obtaining the compound adsorbent grain. The compound adsorbent grain provided by the invention is applied to the adsorption treatment of the tail gas generated from the incineration of organic wastes of construction industry and has the advantages of high efficiency, heat resistance, inflaming retarding property, safety and convenience in transportation management.

The invention discloses a biological carbon soil conditioner and a preparation method thereof. The biological carbon soil conditioner mainly comprises the following components in parts by weight: 40-60 parts of biological carbon, 10-25 parts of pumice and 20-45 parts of bentonite, wherein the biological carbon is obtained by performing anaerobic carbonization on at least one of crops straw, wooden meal, deadwood or deciduous leaves at the temperature of 300-1000 DEG C; and the biological carbon soil conditioner is prepared by the following the steps: mixing the raw materials, adding 15-35 parts of water by weight, stirring, extruding, pelletizing and packaging components. The invention can improve soil physicochemical property, enhance soil organic matter content and fertilizer utilization rate, and reduce carbon dioxide burst size.

The invention is applicable to the field of ecological remediation and provides a treatment method for recovering mine polluted land vegetation. The method comprises the following steps of eliminating large pumice stone or protrusion on the surface of a mine polluted land; preparing an obstruction, control and isolation material; spraying the obstruction, control and isolation material on the surface of the polluted land to form an obstruction, control and isolation layer; sealing and isolating the surface of the polluted land by use of the obstruction, control and isolation layer; reestablishing a vegetation layer on the obstruction, control and isolation layer by use of a fiber soil fixation and slope protection vegetation technology; planting plants on the vegetation layer so as to realize vegetation recovery. According to the treatment method, the obstruction, control and isolation layer is formed on the surface of a mine so as to achieve a physical and chemical sealing and isolation effect, acidic and heavy metal ions which are likely to be reversely permeated in the deep layer of the mine are prevented from being reversely permeated to the surface layer of the mine due to the soil capillary action, and the vegetation layer is reestablished on the obstruction, control and isolation layer, so that a mine soil environment with favorable physical and chemical properties can be provided for the growth and development of the plants, and thus the purposes of recovering the vegetation and conserving water and soil can be achieved.

The invention provides a composite mineral soil repair agent, which is prepared from the following components in parts by weight: 60-75 parts of medical stone, 5-15 parts of zeolite, 20-25 parts of peat, 5-15 parts of pumice, 5-15 parts of bentonite and 0.5-1 part of microbial fermentation liquid, the repair agent is prepared from steps of material selecting, crushing, mixing, stirring, granulating, drying, checking and packing, the soil repair agent prepared by the invention can perfect soil quality, prevent soil compaction, regulate pH value and adsorb heavy metals to well perfect the growth soil environment of crops so as to beneficially improve the yield of the crops.

The invention relates an approach to produce artificial pumice. It is burned by nether materials: inorganic material, sodium hydroxide, borax, Paris white, carbon dust and isinglass. Thereinto, inorganic material is selected from minerals or clay. It follows nether steps: mixing above materials in terms of given ratio, cracking blending to 60-200 items and loading into a module to bake.