Specifications
Fire assay fluxes according to customers' recipe, or our own specification. Gold free and silver free type are available
The famous fire assay has been around for more than 500 years, but it still is the best method for determining the quantity of gold, platinium and other precious metals, thus widely used by gochemical assay laboratories. The fire assay process works by fusing or dissolving the rock sample in a crucible using a lead glass flux. Fluxes of various types are used on various types of ores. Most flux mixes may contain the following:
Litharge,
Sodium bicarbonate,
Silica,
Borax,
Flour,
Florite,
Etc.
Gemhold does custom manufacturing of lead monoxide(litharge) with qualified manufacturer in china, producing top grades of litharge from 99.5% - 99.9%min, which are widely used in fire assay, optical glass, piezo ceramic, and other industries. For fire assay industry, gemhold can produce assay grade litharge with very low gold and silver content, say, gold less than 1.5ppb, and silver less than 0.15ppm.
Gemhold can produce assay fluxes according to customers' recipe, or from our own standard. Our ability to product high quality litharge enable us to produce idea fluxes needed in the low level assay works. Our quality control system and semi-automatic manufacturing processes make our fluxes fully reliable. We can assay each batch of our flux if customers require that, and coa be be provided before despatching
Product description: 1.Material: magnesium oxide 2.Featrue:, high thermal shock resistance Packaging & shipping: 1.Packaging details: cartons with pallet 2.Delivery time: within 20 days Usage: Used for smelting and assaying , excluding gold and silver elements, more accurate test results, high temperature resistance and resistance to thermal shock ., Specific techincal data Production method:dry pressing Typical chemical analysis Mgo, 98.5% Al2o3, 1.2% Working temperature1300, ??-1350, ?? Specific gravity:2.35 Porosity:12%-15% Lead absorption91%
Product specifications: 1.Made of fire clay 2.Used for smelting & assaying 3.High density & quality Applications: Precious metal analysis Mining laboratory Laboratory testing Mineral assaying Fire assaying Gold assaying Features: Long lasting, can be used 3-5 times High mechanical strength designed to withstand severe thermal shocks Special formula, curing and pressing process Multi-use crucible Withstand extremely corrosive fire assay environments Packaging & shipping: Cartons with pallete, crates or as customer's requiements. Usage: Used for smelting and assaying , excluding gold and silver elements, more accurate test results, high temperature resistance and resistance to thermal shock . The average serial can be used for 3-5 times Specific technical data Production method:press forming Typical chemical analysis Sio269.84% Al2o328% Cao 0.14% Fe2o31.90% Working temperature1400??-1500?? Specific gravity:2.3 Porosity: 25%-26%
Supplier: Fire assay crucible, fire assay cupel and fire assay flux
Dolomite is a mineral that is usually found in dolostone deposits, which are sedimentary rocks. Its applications are driven by the intrinsic distinctions between dolomite and calcite It is a versatile mineral that is used across several industries such as construction, agriculture, ceramics, pharmaceuticals, paints, plastics, rubber and refractories to mention a few. The physical properties of dolomite are its soft to medium hardness with a value of 3 and 4 on the Mohs scale and the pearly luster. Dolomite is used as a source of magnesium in ceramic, glass, cement and pharmaceutical sectors. In the Iron and steel industries, dolomite is massively used because of its strength and compatibility in purifying iron and steel. For construction and building materials, it is used as a substitute for lime. Sodium triphosphate (STP), also sodium tripolyphosphate (STPP), or tripolyphosphate (TPP), is an inorganic compound with formula Na5P3O10. The burnt dolomite is used in refractories, as a sintering agent in the palletization of iron ore and as a flux agent in the production of steel. Paints, plastics, rubber, soaps, and detergents sectors use it as filler in their manufacturing processes. Farmers use dolomite to adjust the pH of their crops. It is also used in the chemical industry to make magnesium salts such as magnesia and magnesium oxide (MgO), which is further utilised in pharmaceuticals. The distinguishing characteristics of our natural dolomite are: High purity grade along with whiteness. Our Dolomite has high compressive and shear strength. It also has the wet ability and fire-resistant. The strength of our mineral dolomite is its long life and rigidity. The structure of dolomite is like that of calcite, except every other cation layer contains magnesium ions instead of calcium ions. But, if we compare dolomite to calcite, its usage will be less prevalent within the industries. This is because of the lack of brightness in the dolomite mineral. We provide cutting-edge and high grade dolomite minerals that can be used in a variety of applications. In order to meet all diverse demands, we can add additional refining operations to our standard dolomite mineral production to suit the bespoke requirements of various sectors and industries.
Soda Feldspar refers to group of Aluminum Silicate of sodium. The chief use of Feldspar is in the Ceramic and Glass Industries. Smaller quantities are used in the manufacturing of Tiles, Whiteware, and Sanitaryware. Other uses of Feldspar include Catalysts, Acid resistant and Decorative Stone as a flux or binding agent in certain scanning Soaps and artificial teeth. In ceramic bodies, the main vitrifying (fluxing) agent is feldspar. The majority of white ware bodies contain good proportions of feldspar. It acts as a flux. In the ceramic industry, the flux is defined as that portion of the body which develops glass phase. This is provided mostly by feldspar. The amount of flux in a ceramic body should be only in such a proportion as to develop the desired amount of vitrification. If excess of flux is added, the fired body becomes very glassy and consequently, brittle. Salient Features It acts as a flux It is the main vitrifying agent in ceramic bodies
Potash Feldspar is a naturally occuring Potassium Alumino Silicate rock occurring in pegmatite bodies. Feldspar is used as a flux in ceramic and glass industries. It also adds strength to the body. Feldspar is a rare occurrence of extremely pure mineral free from mica. The chief impurities namely clay, and other foreign matter all occur as fine bodies below one mm. It is used in many industries like Ceramics, Glass Industries, Pottery, Battery, lead-acid automotive, Beverage glass, Fluorescent light, Mirror Plate, ceramic, Polyvinylchloride (PVC) plastic pipe Sink, ceramic Television picture tube, Tile, Sanitary, bulb , tube light etc. Salient Features Best for Ceramic & Sanitary Ware Manufacturing - Application in both Glaze (K2O > 11.5%) & Body (K2O >10.5%) - gives White Firing Colour. Glass Grades - better fluxing from K2O > 10% (total alkalies > 13%), Alumina > 17% for strength, Low Iron Fe2O3 at < 0.5%. High Potash K2O >11% for Flux coated Welding Electrodes.
What is Frit? The mixture of silica and fluxes which is fused at high temperature to make glass. A frit is a type of ceramic glass that predominantly consists of silica, di boron trioxide and soda. This combination of raw materials are industrially melted and rapidly cooled. Frits form an important part of the batches used in compounding enamels and ceramic glazes. Not all glasses that is fused and quenched in water is frit, as this method of cooling down very hot glass is widely used in glass manufacture. What are the Classifications? Opaque Frit: It has lower or higher coefficient of thermal expansion, water anti- penetration ability, wide firing range, low softening point, resist to crazing. Transparent Frit: Excellent gloss & color development frit, often used in single fast firing wall and floor tiles, High Transparently glossy glaze suitable for rustic or homogeneous tiles. How does a Ceramic Frit make? Ceramic frits are obtained by fusing raw materials in a melting kiln at higher temperature. The melt is cooled quickly, either by quenching in water which transforms it into a fragmented solid that is practically insoluble in water. What are the Uses in ceramics? Because of their various applications, there are numerous types of frits, each with specific uses. Despite the diversity, manufactured frits typically all contain more than one kind of flux (for melting) and are stabilized with alumina and silica. This causes the frits to be more reliable in consistently reproducing glazes
What is Composed Glaze? Composed glaze is a thin layer of liquid of different combined glaze materials which is put on ceramic tableware, sanitary ware or tiles and makes it so much hard and shiny when those are heated in very high temperature. What are the classifications? Composed Glaze for Tiles Composed glaze for Tableware What are the specifications? Ceramic glaze has five basic components. These components are silica, alumina, flux, colorants and modifiers. Even though all glazes are made up of the same components. However, Glazes need a balance of three main ingredients: Silica, Alumina and. Parameter of our Composed Glaze Serial Number Parameter Result 1 Viscosity 60-90 Sec 2 Density 1.88-1.90 gm/cc How do Ceramics Glaze work? Composed Glazes are vitreous by their nature. When glaze is fired onto a piece it is like covering the piece with glass. It seals the piece stain resistant. The same glaze can also turn different colors when fired to different temperatures. It also gives a tougher surface. What is the Purpose of applying Composed Glaze in Ceramics? Composed Glaze is used to serve color, decorate and waterproof to a ceramic product. Moreover,Composed glaze can enhance the fired clay body on an aesthetic and a functional level. Visually, Composed glaze can be decorative and a great source of color and texture. Practically, once this glaze can seal clay bodies fired, making them waterproof and food safe
Product Name & Code: Potash Feldspar It is a silicate of aluminum containing potash, soda, etc which forms with even cleavage planes. This feldspar is distinguished from the other form by its content of potassium. VASTTRADEZI offers fine quality high-purity feldspar in both lumps and powder form. Our product has always stood distinct with its uniqueness in comparison with other competing products. The salient features of our product are 1. High alkali content and balanced chemistry speed up the transition rate of the glass phase in vitrified tiles. 2. Improve the maturity at the desired temperature and also imparts better compactness. 3. Increase the fired flexural strength in the tile body. 4. Homogeneous particle size distribution exhibits better thermal properties. 5. Stabilize the firing temperature with a broad thermal range. 6. Contribute good whiteness and glossiness. Form: Powder Grains. Color: White / Yellow. Grade: Premium Application: Ceramic Tile Industry, Sanitary Ware Industry, Glass Industry, and Tableware Industry. Future: Good Na20 Content, White Firing, Good Fluxing Property, Test Report - Chemical Analysis (Wet Process) : SiO2 - 67.18%, AL203 - 17.08%, Fe2O3 - 0.09%, TiO2 - 0.05%, CaO - 1.09%, MgO - 0.18%, K2O - 11.36%, Na2O - 2.1%, Loss On Ignition - 0.62% **Note: The % is on base on our recent chemical Analysis Report. Packing & Delivery: 1 HDPE Jumbo Bag Contain 120000 Kgs, 1x20" Ft Container containing 20 Jumbo Bag. Location: Morbi, Gujarat-India.
