Sachtleben Chemie

Sachtleben Chemie (Germany) Southeastern Clay Tinfos (Norway)... 

Figure 17. Weak acid recovery plant used by Sachtleben Chemie (based on know-how of Bayer AG) a) Heat exchanger b) Evaporator c) Injection condenser d) Stirred salt maturing vessels e) Filter press f) Bunker for pyrites g) Coal silo h) Bunker i) Mixing screw unit j) Covered store for mixed filter cake k) Calcination furnace 1) Waste-heat boiler m) Cyclone n) Electrostatic precipitator o) Stirred tank p) Storage tank q) Pump r) Cooler...

Trade names include Titanium Dioxide P 25 (Degussa, Germany), Hombitec RM Series (Sachtleben Chemie, Germany) and Micro Titanium Dioxide MT-Series (Tayca, Japan). Transparent titanium dioxide is also produced by Ishihara (Japan) and Kemira Oy (Finnland). 

Wolf-Dieter Griebler, Sachtleben Chemie GmbH, Duisburg, Federal Republic of Germany (Section 2.2)... 

Zinc Sulfide, Whereas zinc sulfide is mainly important as a component of the composite white pigment lithopone, it also has a limited use as a single pigment. Under the commercial name Sachtolith, pure ZnS is produced by Sachtleben Chemie in Germany. 

A careful heat treatment under aerated condition has been performed for Hombikat UV100 Ti02 powder (Sachtleben Chemie, GmbH). The crystal structure of the powder remains anatase below 800°C. For ESR measurements, Ti02 powder sealed under vacuum in a sample tube was irradiated with a 500 W mercury lamp through a band-pass glass filter. In order to examine the reactivity of the samples, 1 atm of air, 45 Torr of 2-propanol vapor, or 20 Torr of water vapor was introduced into the sample tubes. 

Sachtleben Chemie (based on know-how of Covered store for mixed filter cake k) Calcina-... 

White pigments based on zinc sulfide were first developed and patented in 1850 in France. Although they are still of economic importance, they have continually lost market volume since the early 1950s when titanium dioxide was introduced. Only one modem production installation for zinc sulfide pigments still exists in the western hemisphere (Sachtleben Chemie, Germany). All other production plants are located in China. 

Two different photocatalysts, namely, Hombikat UV100 (Sachtleben Chemie) and P25 (Degussa) have been used in batch experiments [443] to compare their ability to degrade the toxic components of a biologically pretreated landfill... 

Blanc Fixe 1090P - precipitated barium sulfate Sachtleben Chemie GmbH, Duisburg, Germany... 

Figure 2.5. SEM micrograph of Blanc fixe micro at different magnifications (upper lOOOx, middle 5000x, lower 25,000x). Courtesy of Sachtleben Chemie. Duisburg, Germany.

For some applications, a refractive index is important. A match between the particle size of some barium grades and the refractive index of matrix material allows the formulation of products with desirable optical properties. A series of synthetic barium sulfates is produced by Sachtleben Chemie which have particle sizes between 4 and 10 pm. If the particle size of these barium sulfates is well coordinated with the refractive index of the matrix polymer, semi-opacity combined with translucency results. This permits the foimulation of a light disperser in lampshades or in illuminated advertising displays. The coirect particle size can be calculated from the equation d = (lOOn - 141)/2, where n is the refractive index of the resin and d the particle size of barium sulfate. 

Figure 2.76. SEM micrographs of zinc sulfide, Sachtolith, under three magnifications of 2000x, 10,000x and 150,000x. Courtesy of Sachtleben Chemie GmbH, Duisburg, Germany.

Blanc fixe. [Sachtleben Chemie GmbH] Barium sulfate inert filler for plastics. 

Sachtolith . [Sachtleben Chemie GmbH Ore Chem.] Zinc sulfide white pigment for thermoplastics, thermosets, elastomers, textile fibers, paper, sealants, lubricants. 

Pure anatase titania powders (Millenium Chemicals PC500, Sachtleben Chemie GmbH Hombikat UVIOO and Hombikat TlOO) and Degussa P25 (80%anatase/20%rutile) were purchased and used without further purification. 

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