铜、铅、锌和镍精矿.金属和湿度含量测定的取样程序
详细信息
- 中文主题词：铜无机化合物 ; 铜矿石 ; 硫酸铜 ; 定义 ; 测定 ; 铅化合物 ; 铅无机化合物 ; 铅矿石 ; 金属含量 ; 金属矿 ; 含水量 ; 抽样方法 ; 硫化物 ; 锌无机化合物 ; 锌矿石 ; 锌硫化物
- 标准号：BS ISO 12743-2007
- 发布日期：2007-04-30
- 英文题名：Copper, lead, zinc and nickel concentrates - Sampling procedures for determination of metal and moisture content
- 英文主题词：Copper inorganic compounds ; Copper ores ; Copper sulphates ; Definitions ; Determination ; Lead compounds ; Lead inorganic compounds ; Lead ores ; Metal content ; Metalliferous minerals ; Moisture contents ; Sampling methods ; Sulphides ; Zinc inorganic compounds ; Zinc ores ; Zinc sulfide
- 标准状态：现行
- 发布单位：GB-BSI
- 实施日期：2007-04-30
- 国际标准分类号：73.060.99
- 载体形态：86P;A4
- 中国标准分类号：D42
- 国别：英国标准学会
文摘
This International Standard sets out the basic methods for sampling copper, lead, zinc and nickel concentrates from moving streams and stationary lots, including stopped-belt sampling, to provide samples for chemical analysis, physical testing and determination of moisture content, in accordance with the relevant International Standards. Where the concentrates are susceptible to significant oxidation or decomposition, it is necessary to use a common sample for moisture determination and chemical analysis to eliminate bias (see ISO 10251). In such cases, the common sample must be sufficiently representative, i.e. unbiased and sufficiently precise, for chemical analysis and determination of moisture content. Any large agglomerates (> 10 mm) present in the primary sample should be crushed prior to further sample processing. Sampling of concentrates in slurry form is specifically excluded from this International Standard. Stopped-belt sampling is the reference method for collecting concentrate samples against which mechanical and manual-sampling procedures may be compared. Sampling from moving streams is the preferred method. Both falling-stream and cross-belt samplers are described. Sampling from stationary lots is used only where sampling from moving streams is not possible. The procedures described in this International Standard, for sampling from stationary lots, only minimize some of the systematic sampling errors.