Coal minerals

Marston Sala high-gradient magnetic separator Electromagnet, SI 1 percondi icting 20,000 50,000 Steel wool, expanded metal, steel halls 25x Itf Strongly to very weakly 0.0001-2 Iron ores, industrial minerals, coal, liquefied coal, wastewaters, purifiers, catalyst recovery, chemical industry... 

Catalyst type Coal minerals Coal minerals Coal minerals Supported aKZO-aO-60 aKZO-aO-60... 

Berg-kalk, m. rock time (Geol.) mountain limestone. -kiesel, m. rock flint, chert felsite. -kohle,/. (mineral) coal, -kork, m. mountain cork (a light form of asbestos), -kreide, /. rock lime, -kristall, -krystall, m. rock crystal (transparent quartz), -kupfer, n. native copper, -lasur, /. azurite. -leder, n. mountain leather (a form of asbestos), -maun, m miner. 

Stein-kem, m. stone (in fruit, in burnt lime), -kitt, m. cement for stone, -klee, m. melilot (Melilotua, esp. M. officinalia) white clover (Trifolium repena). -kohle, /. mineral coal, coal. 

Z.B., abbrev. (zum Beispiel) for example, e.g, Z.E., abbrev. (zum Exempel) for example, e.g. Zeche,/. mine, raining company score, bill. Zechen-kohle, /. mine coal, mineral coal. 

The most widely used form of the carbonaceous fuels is perhaps the solid fuel, coal. Though occurring basically in the solid form, coal can be converted to both liquid and gaseous forms. In the solid form, coal is basically of two types charcoal (prepared by carbonization of wood) and mineral coal (obtained from coal mines). Coal is found on every continent,... 

The formation of mineral coal is not an instantaneous process, but is an extremely lengthy one, spread over an extended period. Millions of years ago, when the temperature was moderate and rainfall was heavy, vegetation was quite thick, especially in the low-lying areas of the Earth. Coal-forming plants probably grew in swamps, and as the plants died, their debris gradually formed a thick layer of matter on the swamp floor. Over a prolonged period, this matter hardened into a substance called peat. The peat deposits became buried under sand or other mineral matter. As the mineral matter accumulated, some of it turned... 

The action of organic solvents on natural polymers combustible minerals (coal and brown coal or peat) is intensively studied for a long time due to following reasons. Firstly, this is one of the successful method of studying the structure of combustible materials and the second is their technological application for obtaining of a so-called montan-wax or low-molecular liquid extracts which can be transformed into synthetic liquid fuel due to hydration process. Moreover, an interaction of a coal with the solvents is a basis of the coals liquation processes and coals transformation into liquid fuel. 

Cunnington, M. E., Mineral coal in Roman Britain, Antiquity, 7, 89-90... 

V. Composizione a fumo arancione (Compn for orange-colored smoke) Chrysoidine 45, KC103 25, milk sugar 30 mineral coal flour 5%... 

The distribution of cool is very extensive it is found in almost every country, although to a very unequal extent. The United States may be considered as the most highly favored in this respect, if the area of tkoir coal deposits be taken into account, irrespective of the extent to which they are worked. It happens, however, that, from the abundance of wood, the home consumption of the article is limited, while the conveyance is costly, so that the benefits which result from valuable coal seams in other nations, remain to be developed in Amorica. According to the Statistical calculations of Mitchell, the annexed table represents the amount and varieties of the mineral coal treasures in the United States —... 

As already stated, much of the superior quality of the iron produced in thoso countries depends more upon the purity of the ore and the fuel, than on any. difference in the mode of manufacture. When coke or mineral coal is used by the same method, and for the same ores, the iron produced is very inferior and when the ordinary ore of this country is treated by the same process, even with charcoal, the iron produced is not equal to that made from tiro best ore and charcoal, showing how much depends upon the character and -quality of the fuel. 

Versatic acid has been used in Japan to recover indium and gallium from solutions obtained from the leaching of bauxites, zinc minerals, coal ash and flue dusts.40 41-63 Extraction is carried out at a pH value of 2.5 to 4.0 some coextraction of tin(II), iron(III) and aluminum(III) occurs if these metals are present. In the extraction of indium(III) by n-hexanoic acid,64 the predominant species in the organic phase was found to be InA3(HA)3 whereas in the extraction by n-decanoic acid65 the existence of trimeric (InA3-HA)3 and hexameric [InA2(OH)]g species was also postulated. 

Mineralized coal impure coal that is heavily impregnated with mineral matter, either dispersed or discretely localized along cleat joints or other fissures pyrite and calcareous minerals are the most common (ASTM D-2796). 

B23 Mineralized coal and coal balls 1= 1 Shale, parting... 

Belkin, H. E., Zheng, B., Zhou, D., and Finkelman, R. B. (1997). Preliminary results on the geochemistry and mineralogy of arsenic in mineralized coals from endemic arsenosis areas in Guizhou Province, P.R. China. In Proceedings, Fourteenth Annual International Pittsburgh Coal Conference Workshop, 23-27 September, 1997, Taiyuan, Shanxi, People s Republic of China, CD-ROM, p. 1-20. 

Supercritical Fluid Extraction of a High-Ash Brazilian Mineral Coal... 

The mineral coal reserves are one of the most important non-renewable energy sources in the world [3]. The same is true when it refers to the Brazilian energy context where they represent 60% of our non-renewable energy sources. The largest reserves are located in South Brazil and, as in other countries with large coal reserves, SCFE is here proposed as an upgrading process for Brazilian mineral coal. 

The aim of the present work is to study the effects of extraction temperature, solvent density and addition of cosolvents on the conversion and liquid yield and also on the characteristics of the extracts and residues obtained from SCFE of a high-ash (29.1%) Brazilian mineral coal. For this purpose a Butia coal, sub-bituminous coal, was employed under different experimental conditions in a semi-batch laboratory-scale unit using toluene as primary solvent, over the range of 593-673 K in temperature and 4.7-11.5 MPa in pressure. 

The association of minerals and coal can be used in mineral exploration. Although the concentration of elements in coal may not be economic, it may indicate the presense of nearby mineralization. Coal may thus be used as a geochemical prospecting tool to locate economic mineral deposits. Finkelman and Brown (1991) noted the remarkable high silver content (500 ppm in the ash) in a central Texas bituminous coal and suggested that this anomalously high silver... 

KarweU J. (1955) The metamorphism of mineral coal in terrrrs of physical chertristry. Zeitschrift 107, 132-139. 

Another approach has been developed in the field of mineral coal research in coke production. This approach is based on the volatile contents of the non-thermally treated material and of the char. As a result of the process of carbonization, the whole volatile matter of wood must be eliminated, except the residual volatile matter contained in the char. Consequently, the theoretical mass yield of carbonization is the ratio between the non volatile matter of the wood on one hand and the non volatile matter of the char on the other hand. The formula is [7] ... 

Metso Minerals. Coal water fuel (CWF) plants raw coal transformed into liquid fuel. http //www.metsominerals.com/inetMinerals/ mmcontent2.nsf/WebWID/WTB-030508-2256B-5B A7F/ File/FLUID C ARBON.pdf. 

---