"barite"相关例句(18)
2.A Preliminary Proof of Barite Mineral Resources and Exploitation Utilization in Shibing, Guizhou
3.Abstract: The Gongxi barite deposit hosts in the Niutitang formation of the lower Cambrian.
4.a soft silvery metallic element of the alkali earth group; found in barite.
5.1 Barite is one of the weighting materials. The density is about 4.2 S.G.
6.Mixing of different waters and formation of secondary barite in the Clara mine, Black Forest, Germany
7.9 Adding 20 tons Barite to raise mud weight of this pit to the 1.20 S.G.
8.Barite with similar idiomorph has been reported in the Guaymas Basin, California, and been confirmed with hydrothermal origin.
9.SULPHUR ISOTOPE COMPOSITION OF THE MARINE SEDIMENTARY BARITE OF CAMBRIAN—SINIAN SYSTEM IN SOUTH CHINA AND ITS SIGNIFICANCE IN GEOLOGY
10.The useful ore mineral is barite and the gangue minerals are mainly calcite, clay mineral and quartz et al.
11.Superfine natural barium sulfate powder, made by processing high-purity barite ore, is widely used in the industries of paint, powder paint and plastic, etc.
12.Geological Features and S, He and Ar Isotopic Studies of the Bulong Quartz——Barite Vein-type Gold Deposit in Akqi County, Xinjiang
13.The useful mineral of the ore is barite, and its gangue mineral essenti-ally include ecarbonaceous clay mineral and quartz(including chalcedony, ete.)
14.The test results in this paper show that the mixture of starch calcium nitrate can improving the selectivity of naphthenic acid (NPA) collecting fluorite and barite in flotation.
15.The method has been applied to the determination of BaO and BaSO 4 in Barite concentrates and other ores. The analytical results from this method are in agreement with alkali fusion BaSO 4 gravimetry and BaCrO 4 volumetry with precision of < 5% RSD ( n =10).
16.The mixing of the Ba-rich Na - Ca - Cl - HCO3 -type water with the SO42---rich Ca - Na - SO4 - Cl-type water is the most important reason for the formation of secondary barite " Meiβelspat" in the Clara mine.
17.The overseas field application shows that oil base muds with densities greater than 1.6 g/cm3 have lower equivalent circulation density(ECD) if manganese tetraoxide is used as the weighting agent,instead of barite.
18.Huangmei has a rich reserve of underground minerals, 15 sorts are proven to have exploitation value, of which, limonite and siderite have a reserve of 58 million tons, the tenor is around 45%, being concentrated; quartz is of 100 million tons; gypsum mine is 270 million tons; barite is 500,000 tons and silex of 10 million tons; porcelain clay, limestone, shale and granite are extensively distributed and of large reserve.
