430 results about "Pumice dust" patented technology

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.

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.

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.

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.

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 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 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.

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 discloses an anion converter solving the problems of low kinetic energy of free electrons generated by the traditional equipment for combining and reacting with air molecules to generate anions and full short circuit caused by high voltage in the equipment to the ground. The anion converter comprises a high-voltage insulating housing, a stainless steel electron collector, a pumice with a dielectric property, a first conducing wire and a nano carbon fiber bundle, wherein the first conducting wire is used for conducting free electrons generated by open type single-pole anion generator, and the nano carbon fiber bundle is connected to the end of the first conducting wire. The anion converter can effectively increase the kinetic energy of the free electrons so that diffused electrons have large air contact area, and the anion converter has the advantages of large anion generation amount, high purity and remote transmitting distance; and the high-voltage insulating housing with high-voltage insulation can effectively prevent the full short circuit caused by a outward transmitting module of the air anions to the ground from burning instruments.

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.

The invention provides an orchid planting material which contains the components by volume ratio of: 10 to 88 percent of organic matter material and 10 to 88 percent of hard filling material. The best volume ratio of the components is 50 to 68 percent of organic matter material and 30 to 48 percent of hard filling material. The organic matter material is any of or any combination of peanut shell, pine bark granule, fir granule, rice hull, shattered sawdust, turfy soil, peat soil, pond mud granule, grass lichen, bamboo root soil, hepaticae bran soil and rotten leaf soil; the hard filling material is any of or any combination of granite, lime stone, water pumice, brick fragment, river sand, sea sand and coal ash and slag. The planting material of the invention has good hydrophobicity and breathability, good water retention property, complete nutrition and proper amount of fertilizer, thus solving the difficulties that the orchid is hard to raise and easy to wither for root rot and greatly promoting the survival rate of the orchid.

The invention provides a roof greening structure and a greening method. The roof greening structure comprises a main structure and an auxiliary structure, wherein the main structure comprises a water-proof root-blocking layer, a protection layer, a light-weight aggregate pervious concrete water storage layer, a filter layer, a light nutrient soil layer and a vegetation layer which are paved on the main structure in sequence; the auxiliary structure comprises a water drainage opening, an inspection well, a spare drain opening and an overflow opening; the material, namely light-weight aggregate pervious concrete, of the light-weight aggregate pervious concrete water storage layer is prepared from the following materials by weight: 50 to 80 parts of pumice, 15 to 45 parts of cement, 5 to 15 parts of water, 0.5 to 1.5 parts of a special strengthening agent for pervious concrete, and 0.1 to 0.5 part of a water-retaining agent. The void ratio of the light-weight aggregate pervious concrete water storage layer is equal to or larger than 20 %, can store rainwater of concentrated rainfall, and has the functions of flood detention, storage regulation, flood peak reduction, and initial rainwater purification in a regional scale; due to the large void structure, plant roots can penetrate easily, so that the roof greening structure and the greening method are suitable for planting low shrubs and dwarf trees, and have a good root fixing effect.

The invention is a hand held nail and foot groomer for people, which includes a spherical nail groomer body having at least one compartment for batteries and tips; a semi-spherical tip cover assembly having an opening, being in substantial contact to the nail groomer body and being movably connected to the nail groomer body; a combination battery, motor and tip compartment; a tip assembly for attachment of various shapes and sizes of nail files and brushes. The preferred embodiment of this invention is one in which the nail body optionally includes a flat bottom section which includes one or more detachable ringed or recessed sections, said ring sections or recessed sections capable of holding rounded and optionally recessed files and/or pumice stones and/emery files and/or foot scarpers useful in grooming feet.

The invention relates to pumice concrete with the function of electromagnetic wave absorption, which belongs to the technical field of building wave-absorbing materials and is characterized in that the pumice concrete uses pumice as a coarse aggregate and uses carbon black as an absorbent. The pumice concrete uses ordinary portland cement as a cementitious materials and uses medium sand as a fineaggregate. The prepared pumice concrete has a minimum reflectivity of -25 dB in the range of 2 to18 GHz. The pumice concrete provided by the invention is characterized in that production process is simple, material sources are widespread, product price is low and industrialized production can be realized; the pumice concrete can be used for cast-in-place wall and roof, and also can be made into concrete products, such as wallboard, blockroof slab and the like; and the pumice concrete has a great wave-absorbing effect and moderate intensity, and is suitable for promotion and use.

An apparatus for providing foot care. Such apparatus comprises a base member having a predetermined shape and having an upper surface and a bottom surface. There is an abrasive means disposed on the upper surface of the base member and a means disposed on the bottom surface of the apparatus for releasably securing the apparatus to a solid surface such as base of a bathtub or shower stall.

An eraser composition comprising 22-41 wt % styrene-ethylene/butylene-styrene block copolymer, 5-15 wt % ethylene/propylene copolymer, 30-50 wt % calcium carbonate, 10-25 wt % factice; and 0.1-7 wt % pumice is provided. The eraser composition optionally contains up to 1 wt % titanium dioxide. The eraser composition preferably has a hardness of from 70 to 85 Shore A.

A composite material includes a matrix composed of a polyhydroxyalkanoate (PHA) polymer and a filler composed of particles dispersed in the matrix. The particles are composed of naturally-derived materials (e.g., ground bone meal or pumice powder), have a microporous microstructure, have a low hygroscopic expansion, and are less than 1.0 mm in size. Preferably, the matrix and the filler together constitute 100% by weight of the composite material, and at most 30% by volume of the composite material is consumed by the filler. The composite material may take the form of an anaerobically biodegradable article of manufacture such as a building material a coating of a building material or other article.

In accordance with the present invention, various types of seeds are coated with a coating comprising a) a base buildup layer comprising a porous composition such as pumice; b) an intermediate build up layer comprising a silicate composition such as talc or mica; and c) an outer layer comprising a carbon-based composition such as graphite. A binder is optionally added to one or more layers. Preferably, each layer is applied to a seed in either a batch or continuous process using conventional methods of coating. Hybrid corn and sunflower seeds may be coated in accordance with the present invention resulting in a substantially uniform size seed.