73.060.40 铝矿 标准查询与下载

ISO 2366:1974 天然和人造冰晶石 钠含量的测定 火焰发射和原子吸收分光光度法

The methods are applicable as alternatives to products for which the molar ratio NaF/AlF3 is equal to about 3. The principle of the flame emission method consists in atomization of the test solution in a flame of oxygen/hydrogen and determination by measurement of the intensity of the radiation at 589 nm. The principle of the flame atomic absorption method is based on atomization in an air/acetylene flame and measuremnt of the absorption of the 589 nm line emitted by a sodium hollow-cathode lamp. The preparation of the test solution is carried out by dissolution of a test portion in hydrochloric acid and water after attack by concentreted sulphuric acid.

Cryolite, natural and artificial; Determination of sodium content; Flame emission and atomic absorption spectrophotometric methods

ISO 2830:1973 天然和人造冰晶石 铝含量的测定 原子吸收法

Applicable to products having a normal composition for which the molar ratio NaF/AlF3 is equal to about 3. Dissolution of a test portion in concentrated suphuric acid and elimination of hydrogen fluoride. Treatment with hydrochloric acid and water. Atomization of the solution into an acetylene measurement of the absorption of the 309.3 nm line emitted by an aluminium hollow cathode lamp. Has also been approved by the IUPAC.

Cryolite, natural and artificial; Determination of aluminium content; Atomic absorption method

ISO 2367:1972 天然和人造冰晶石 铝含量的测定 8-羟基喹啉重量法

The method can be applied provided the Fe203 content does not exceed 0,15 . It can also be applied to products with molar ratio of NaF to AlF3 between approximately 3 and 1,7. The principle consists in dissolution of a test portion by acid fusion using potassium pyrosulphate and recovery by hydrochloric acid. Separation of the mixture by precipitation of aluminium, with ammonium benzoate , in an acetic reducing medium. Dissolution of the precipitate and reprecipitation as aluminium tri(quinolin-8-oxide) in an acetic buffer medium. Filtration, washing, drying of the precipitate at a temperature of 130 鳦 and weighing.

Cryolite (natural and artificial); Determination of aluminium content; 8- Hydroxyquinoline gravimetric method

GOST 14657.10-1972 铝土矿 水分含量测定法

Bauxite. Method for the determination of moisture

AS 2564:1982 铝矿．铝；硅；铁；钛和磷含量的测定．波长色散X射线荧光光谱法

Sets out a wavelength dispersive X-ray fluorescence procedure and includes both a computer program for obtaining the results and a statistical evaluation of the method. It is applicable to all normal aluminium ores regardless of mineralogical type.

Aluminium ores - Determination of aluminium, silicon, iron, titanium and phosphorus contents - Wavelength dispersive X-ray fluorescence spectrometric method

AS 2806.4:2004 铝矿．采样．成分的不均匀性的测定

Provides an experimental method for determining the heterogeneity of constitution which is required for the determination of the minimum sample mass. This Standard is identical with and has been reproduced from ISO 6138:1991.

Aluminium ores - Sampling - Determination of heterogeneity of constitution