Kaolin Clay Brightness

the prefered iron bleaching agents for kaolin

In a process for treating raw kaolin clay to improve the color and brightness by kaolin wherein sodium dithionite is used as the bleaching agent. The primary sources of color in kaolins are hydrated iron oxides, ilmenite, free acidity present in the HAS is generally sufficient to provide the preferred pH.

KaMin KaMin® HG90 Kaolin Clay - Ultrafine, high brightness

Kaolin Clay - Ultrafine, high brightness, KaMin® HG90 is a high brightness, ultra-fine particle size, platy kaolin with moderate water demand providing good tinting strength, Ti02 extension and gloss in water based paints. KaMin® HG90 is ideally

Kaolin Clay

By choosing their locations, clay producers have access to a range of particle sizes and brightness of kaolin particles. High quality deposits of kaolin, having moderately high brightness and uniform particle size are found all over the world, but especially in China, Georgia, Brazil, and England. Anionic dispersants such as phosphates and acrylates are usually added to clay as it is collected ...


The evaluation of the kaolin clay for paper coating was based on a series of empirical tests including viscosity, resistivity, brightness, and particle-size distribu- tion.

China Clay Product Association - kaolin

Kaolin is universally used to coat paper. Mined and processed domestically in central Georgia and western South Carolina, the white clay mineral is prized by paper manufacturers for its brightness, gloss, particle size and shape, rheology and inertness.

Magnetic Filtration of Kaolin Clay - 911metallurgist.com

Subsequent chemical leaching of this whole fraction clay resulted in an 89 brightness which would put this clay in the premium brightness range. Magnetic separation in kaolin processing is a comparatively low cost and versatile technique.

Transworld Clays – Active Mineral

Transworld Services based at Vishakapatnam in the Indian State of Andhra Pradesh owns and operates India’s largest Kaolin/ China Clay mine located in the Indian State of Odisha. Transworld’s Kaolin processing facility is located in the Indian State of Andhra Pradesh.At Transworld, we believe in conducting business with our customers in ethical and transparent manner. Being a mid-sized ...

Kaolin Clay - vanderbiltminerals.com

Kaolin Clay . Paint & Coatings . Vanderbilt Minerals, LLC offers several grades of air-floated kaolin clay for use in paints and coatings. These products find use as fillers for primers, alkyd flats and latex paints. Because of their fine particle size, the hard clays are good TiO2 spacers in paints that do not require a high brightness extender. Typical Chemical Analysis (calculated as oxides ...

What is Kaolin? - Industrial Minerals Association - North ...

The name kaolin derives from the Chinese and means high ridge. High ridge is a reference to the hill in south-eastern China where the clay was originally discovered and used. In the 7th and 8th centuries, the Chinese were the first to use kaolin to make porcelain. It was not until centuries later that other areas of the world could duplicate the process.

Industrial Minerals Solution Provider - Kaolin China Clay ...

Calcined clay is made by the thermal treatment of water-washed and bleached kaolin to achieve purity, improved residues, brightness, and achieve a desired particle size distribution, and then subject to calcinations (heat treatment) to effect the anhydrous state through the removal of 14% water of hydration.

View All Products - Product Finder - imerys-kaolin.com

Alphatex™ is a high brightness, calcined clay used for coating and filling applications in paper and board where high brightness and opacity are required. It is made via a precisely controlled thermal process using a select kaolin feed. The resulting product …

Beneficiation Process of Kaolinite Clay: Kaolin Processing

Kaolin is an important industrial mineral having numerous uses and requiring various market specifications. High brightness kaolin clays represent a continuing challenge to the producer. An advancement in this field of Kaolinite Clay Beneficiation has been a patented process developed by Minerals and Chemicals Philipp Corporation and termed ...

Paper & Packaging | Thiele Kaolin Company

This product is a high brightness No. 2 coating clay. Blended with calcined products, it is a high performance basecoat pigment for unbleached and recycled board applications and for LWC paper grades blended with delaminated products.

US20110001078A1 - Methods for purifying kaolin clays using ...

Disclosed herein are methods for removing discoloring impurities, such as carbon impurities, particularly graphite, from kaolin clay to enhance the brightness of the kaolin clays. The methods include reverse flotation processes. Also disclosed herein are high brightness kaolin products, and the uses thereof.


Kaolin (china clay) is a hydrated aluminium silicate crystalline mineral (kaolinite) formed over many millions of years by the hydrothermal decomposition of granite rocks.

Brightness of clay and other mineral pigments (45/0 ...

The brightness of clay or mineral pigment affects the br ightness of the paper with which it is used. Although one Although one might assume that the measured brightness is a property of the material, in fact the value obtained depends significantly

US2894628A - Clay brightness by flotation - Google Patents

Prior art keywords flotation kaolin product clay froth Prior art date 1956-07-13 Legal status (The legal status is an assumption and is not a legal conclusion.

China Clay Lumps - Coating Grade Clay Lumps Manufacturer ...

Clay occurs in various forms and kaolin (china clay) is the only pure and versatile form. It is commonly used in the Paints, Paper, Plastics, Rubber, Pesticides, Ink, Pigments, Fiber Glass, Cosmetics, Cement, Cable and other industries.

Kaolin Clay: Functional Optical Additives - PCI Mag

Despite the well-entrenched position of the kaolin belt producers, a source of naturally high-purity, high-brightness kaolin has recently come on stream in Utah.1 Kaolin clay is commonly differentiated as "hard" clay or "soft," according to terminology borrowed from the rubber industry.

Kaolin | Imerys

Kaolin, or ‘china clay’ as it is commonly called, is a hydrated aluminum silicate crystalline mineral formed over many millions of years by the hydrothermal decomposition of granite rocks. Hydrous kaolin is characterized by its fine particle size, plate-like or lamellar particle shape and chemical inertness.


the brightness of the kaolin product (Figure 3) was not satisfactory (82.5%). Figure 3 shows brightness of the kaolin product from overflow, after sedimentation step.

Paints & Coatings | Thiele Kaolin Company

This fully calcined, high brightness kaolin clay has excellent optical properties and low abrasion. OPAMAX TM 16, when added to a paint formulation, will allow for the greatest reduction in TiO 2 compared to other kaolin clays.

mining process for kaolinite - rcpitbullsarendonk.be

Beneficiation Process of Kaolinite Clay: Kaolin ProcessingBeneficiation Process of The first step in processing kaolin clay is to which affects the brightness of the clays is controlled by careful mining . Georgia Mining Association Georgia's Kaolin Industry. Georgia's Kaolin Industry Employment, Economic & Environmental Impact. What is Kaolin? Kaolin, which is also known as "china clay," is …

KaMin Kamintex® Kaolin Clay - Calcined

Kaolin Clay - Calcined, Kamintex® is a high brightness calcined clay for filler and paper coating applications. Industry: PAPER & PACKAGING Uses: Coated 1S Label, Coated Bleached Board, Coated Recycled Board, Coated Natural Kraft, Lightweight


1975-01-21· An improved process for improving the brightness of impure kaolin clay containing discrete colored particles of titaniferous impurities wherein the impurities are selectively floated from a dispersed slip of the clay by quiescent (rather than by dynamic) means and the purified clay is further brightened by treatment with a reducing ...

Kaolin clay | pulp paper mill

Calcined kaolin clay is an anhydrous form of china clay and the chemical formulae is Al 2 O 3.2SiO 2. It is produced by calcinations process heating hydrous kaolin clay at 1000°C. At the end of this process brightness and the light scattering coefficient is increased. Hence improve opacity. The opacity of calcined kaolin is better than GCC or PCC and less than titanium dioxide.


tion, this kaolin achieved a remarkable brightness of 79 and Fe203 and TiOz contents of 0,5 and 0.4%. K20 content decreased from 0.3 to 0.18~ after 4 min.

Kaolin Clay, Washed Kaolin, Hydrous Kaolin Products ...

Kaolin (china clay) is a hydrated aluminum silicate derived from the mineral Kaolinite. Kaolin is chemically inert clay with a low shrink-swell capacity, well-suited to a wide range of industrial uses including ceramics, paper, glass fiber, filler, paints, wire and cable and plastics.

China Clay Powder - Coating Grade Clay Powder Manufacturer ...

Cosmetic Clay - Unique raw material for cosmetic products - produced from selective source of natural kaolin minerals having very low ironic impurities and free from all heavy metal.

Australasian Industrial Minerals - Kaolin

EICL manufactures a large range of kaolin clay products from general purpose fillers to technical engineered hydrous clay such as fine delaminated, high brightness super glossing and premium calcined kaolins (including very high brightness ultra fine and surface coated grades).