Feldspar
Application | ||
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In glassmaking, Imerys feldspars are excellent fluxing agents for flat and container glass, as well as for insulation wools. Feldspar is an excellent source of alumina which improves end product hardness, durability, and resistance to chemical corrosion. Used in ceramics, feldspar and pegmatite are the main vitrifying or fluxing agents used during the firing process of ceramic bodies. Fluxes melt at an early stage in the firing process forming a glassy matrix that bonds the other components of the system together, ensuring the durability of fired bodies. Imerys feldspars contain low levels of colored oxides, so they are particularly prized for white tiles and sanitary ware production. Fine-milled Imerys feldspars are valuable multi-functional fillers and extenders in applications such as paints for their good dispersibility, chemical inertness, stable pH, high resistance to abrasion, and low viscosity |
Description | ||
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Feldspar is a tectosilicate with the chemical composition: KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8 Feldspar is the name given to a group of naturally occurring alumino-silicate minerals containing varying amounts of potassium, sodium, calcium, and/or lithium. The feldspar group of minerals is by far the most abundant group of minerals in the Earth’s crust, making up about 50% of all rocks. Feldspar minerals are essential components in igneous, metamorphic, and sedimentary rocks, to such an extent that the classification of a number of rocks is based on their feldspar content. Although highly present in igneous rocks like granite, commercial feldspar is generally mined from pegmatite or feldspathic sand deposits. Feldspars are generally divided into three categories, feldspar, pegmatite and feldspathic sand, and are primarily used in industrial applications for their alumina and alkali content. Feldspars and pegmatites play an important role as fluxing agents in ceramics and glass production, and are valuable functional fillers in the paint and adhesive industries. Physical properties: - High alumina and alkali content - High potassium content - Low iron content - Chemical inertness - pH stable - Consistent hardness (6-6.5 on Mohs scale) |
Product Properties
Set 1
Packaging
Package Type | Weight/Volume per Package | |
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Bag | 25 lb | |
Package Type | Weight/Volume per Package | |
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Bag | 50 lb | |
Pricing
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Documents
Product Champions
General Info
Listing Type | ||
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Product |
Published | ||
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Dec 15, 2022 |
Last Edited | ||
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Dec 15, 2022 |
Categories | ||
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Chemicals |
