By Peter A. Ciullo
This multi-authored guide is a distinct cross-industry source for formulators and compounders, and a useful reference for the manufacturers of formulated commodities and commercial minerals. Monographs on all the universal sensible commercial mineralsùasbestos, barite, calcium carbonate, diatomite, feldspar, gypsum, hormite, kaolin, mica, nepheline syenite, perlite, pyrophyllite, silica, smectite, talc, vermiculite, wollastonite, and zeoliteùinclude an outline of traditional and advertisement kinds, industry dimension, and alertness components. those are supported by means of descriptions of mineral constructions and the marriage of minerals and chemical substances via mineral floor amendment.
This orientation to the minerals and their makes use of kinds the basis for chapters the place they're provided within the context of the final know-how of assorted eating industries. each one of those industry-specific shows covers either the chemical and mineral uncooked fabrics utilized by the formulator, how those are mixed, and correct attempt tools. those chapters serve a twin function. each one clarifies for technologists the functionality and cost of the mineral elements in their items. both very important, they supply a primer at the expertise of industries except their very own, in order that uncooked fabric, formula, processing and trying out concerns should be in comparison and contrasted.
The publication concludes with a formulary demonstrating how particular mineral and chemical components are literally compounded in significant program components, and technical facts on ratings of business mineral items.
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Additional info for Industrial Minerals and Their Uses: A Handbook and Formulary
Other uses − The hemihydrate form is used in a wide variety of construction and industrial plasters. Minor amounts of purified gypsum are used in glassmaking and as a white filler (terra alba) in paint and paper. “Soluble anhydrite”, made by dehydrating gypsum into porous, highly absorbent granules, is used as a desiccant. 5 (Mg, Al)5Si8O20(OH)2(OH2)4 · 4H2O Mg8Si12O30(OH)4(OH2)4 · 8H2O The hormites are clay minerals with a chain instead of a sheet structure. The most common commercial varieties are acicular or needle-like palygorskite, also known as attapulgite in the US, and sepiolite.
Scrap is produced at mines and at sheet mica factories. Scrap mica can be a byproduct of sheet mica mining or of the recovery of other minerals or the sole product of a mine. Factory scrap is the trimmings from sheet mica. Scrap is the source for ground mica products, which today account for more than 95% of all mica sold worldwide. Flake mica − Flake mica is essentially nonfactory-generated scrap mica. It is recovered by flotation from mica ores, from which quartz and feldspar are also generally separated and recovered, or as a floated byproduct during the beneficiation of feldspar, kaolin, or lithium-bearing ores.
Calcination generally turns the white to offwhite natural diatomite pink from iron oxidation. The calcined diatomite is carefully milled, screened, and air classified to various size fractions, primarily for filtration uses. 30 Industrial Minerals and Their Uses Flux-calcined diatomite − This is diatomite that has been calcined at about 1200oC with sodium carbonate or sodium chloride as a fluxing agent. The flux converts iron oxides to a colorless glassy phase, resulting in a white product, and produces greater agglomeration.