73.060.40 铝矿 标准查询与下载
共找到 146 条与 铝矿 相关的标准，共 10 页
Bauxite. Method for the determination of carbon dioxide
- ICS
- 73.060.40
- CCS
- 发布
- 1982
- 实施
- 1984-01-01
Bauxite. Methods of sampling and sample preparation for chemical analysis and water content determination
- ICS
- 73.060.40
- CCS
- 发布
- 1982
- 实施
- 1983-01-01
Bauxite. Methods for the determination calcium oxide and magnesium oxide content
- ICS
- 73.060.40
- CCS
- 发布
- 1982
- 实施
- 1984-01-01
This International Standard specifies a flame atomic absorption method for the determination of the calcium content of natural and artificial cryolite.
Methods of test for cryolite. Determination of calcium content
- ICS
- 73.060.40
- CCS
- D59
- 发布
- 1980-12-31
- 实施
- 1980-12-31
Bauxite. Methods for the determination of iron oxide (III)
- ICS
- 73.060.40
- CCS
- 发布
- 1978
- 实施
- 1979-07-01
Bauxite. Method for the determination of aluminium oxide
- ICS
- 73.060.40
- CCS
- 发布
- 1978
- 实施
- 1979-07-01
Bauxite. Methods for the determination of titanium dioxide
- ICS
- 73.060.40
- CCS
- 发布
- 1978
- 实施
- 1979-07-01
Bauxite. Method for the determination of gallium oxide
- ICS
- 73.060.40
- CCS
- 发布
- 1978
- 实施
- 1979-07-01
Bauxite. Method for the determination of chromium oxide (VI)
- ICS
- 73.060.40
- CCS
- 发布
- 1978
- 实施
- 1979-07-01
Bauxite. Method for the determination of vanadium oxide (V)
- ICS
- 73.060.40
- CCS
- 发布
- 1978
- 实施
- 1979-07-01
Bauxite. Method for the determination of manganese oxide (II)
- ICS
- 73.060.40
- CCS
- 发布
- 1978
- 实施
- 1979-07-01
Bauxite. Method for the determination of iron oxide (II)
- ICS
- 73.060.40
- CCS
- 发布
- 1978
- 实施
- 1979-07-01
Bauxite. Methods for the determination of silica dioxide
- ICS
- 73.060.40
- CCS
- 发布
- 1978
- 实施
- 1979-07-01
Bauxite. General requirements for methods of chemical analysis
- ICS
- 73.060.40
- CCS
- 发布
- 1978
- 实施
- 1979-07-01
Bauxite. Method for the determination of mass loss on ignition
- ICS
- 73.060.40
- CCS
- 发布
- 1978
- 实施
- 1979-07-01
Applies for the determination of natural and synthetic materials having a molar ratio sodium fluoride/aluminium trifluoride between 3 and 1,7 approximately. The method is applicable to products having an iron content equal to or greater than 0,020 % (m/m). The principle consists in dissolution of a test portion by either alkaline or acid fusion. Reduction of iron(III) with hydroxylammonium chloride, formation of the complex iron(II)-1, 10-phenathroline in a buffered medium at pH value between 3,5 and 4,2. Photometric measurement of the coloured complex at a wavelength of about 510 nm. Applies ISO Recommendation R 1694-1970.
Cryolite, natural and artificial; Determination of iron content; 1,10- Phenanthroline photometric method
- ICS
- 73.060.40
- CCS
- D59
- 发布
- 1976-09
- 实施
Specifies methods of test for natural and synthetic materials having a molar ratio sodium fluoride/aluminium trifluoride between 3 and 1,7 approximately. The method is applicable to products the phosphorus pentoxide content of which does not exceed 0,02 % (m/m). The procedure consists in alkaline fusion of a test portion by means of a mixture of sodium carbonate and boric acid. Dissolution of the fused mass in excess nitric acid so that the pH value is between 0,7 and 0,9. Formation of the (Yellow) oxidized molybdosilicate under clearly defined conditions of acidity, temperature, time and concentration of reagents. Selective reduction in the presence of tartaric acid and measurement at a wvelength of about 815 nm.
Cryolite, natural and artificial; Determination of silica content; Reduced molybdosilicate spectrophotometric method
- ICS
- 73.060.40
- CCS
- D59
- 发布
- 1976-09
- 实施
Specifies the determination for natural and synthetic materials having a molar ratio sodium fluoride/aluminium trifluoride between 3 and 1,7 approximately. The principle consists in fusion of a test portion with sodium carbonate, separation of fluorine by distillation with sulphuric acid or perchloric acid. Titration with thorium nitrate solution in presence of sodium alizarinsulphonate/methylene blue as indicator. Alternatively, the thorium nitrate titration may be made using only sodium alizarinsulphonate, the end-point being; spectrophotometrically determined at 525 nm.
Cryolite, natural and artificial; Determination of fluorine content; Modified Willard-Winter method
- ICS
- 73.060.40
- CCS
- D59
- 发布
- 1976-09
- 实施
Specifies the procedure for the preparation of crude samples and dried samples and of natural and synthetic materials having a molar ratio sodium fluoride/aluminium trifluoride between 3 and 1,7 approximately. The crude sample is intended for the determination of geometric characteristics, for certain physical and physico-chemical tests and for moisture determination. The dried sample serves especially for chemical tests. The principle of the procedure consists in grinding followed by sieving of the sample until the whole passes through a sieve of mesh aperture 0,125 mm. Thorough mixing and drying at approximately 110 鳦.
Cryolite, natural and artificial; Preparation and storage of test samples
- ICS
- 73.060.40
- CCS
- D80;D50
- 发布
- 1976-09
- 实施
Describes the preparation of the calibration graph and the dissolution of a test portion in concentrated sulphuric acid and heating on a hot-plate until the hydrofluoric acid has evaporated. Treatment of the residue with concentrated hydrochloric acid. Aspiration of the solution into an acetylene/dinitrogen monoxide flame and spectrophotometric measurement of the absorption of the 422.7-nm line emitted by a calcium hollow cathode lamp.
Cryolite, natural and artificial; Determination of calcium content; Flame atomic absorption method
- ICS
- 73.060.40
- CCS
- D59
- 发布
- 1976-09
- 实施
