标准编号：ISO 11794:2010
中文名称：铜、铅、锌及镍精矿 矿渣取样
英文名称：Copper, lead, zinc and nickel concentrates — Sampling of slurries
发布日期：2010-10
标准范围
WARNING — This International Standard may involve hazardous materials, operations and equipment.It is the responsibility of the user of this International Standard to establish appropriate health andsafety practices and determine the applicability of regulatory limitations prior to use.This International Standard sets out the basic methods for sampling particulate material that is mixed with aliquid, usually water, to form a slurry. In industry and in the mining and mineral processing literature, slurry isalso referred to as pulp, but this term is not used in this International Standard. At very high ratios of fineparticulate solids to liquids where material assumes a soft plastic form, the mixture is correctly termed as apaste. Sampling of pastes is not covered in this International Standard.The procedures described in this International Standard apply to sampling of particulate materials that aretransported in moving streams as slurries, but not pressurized slurries. These streams may fall freely or beconfined in pipes, launders, flumes, sluices, spirals or similar channels. Sampling of slurries in stationarysituations, such as a settled or even a well-stirred slurry in a holding vessel or dam, is not recommended andis not covered in this International Standard.This International Standard describes procedures that are designed to provide samples representative of theslurry solids and particle-size distribution of the slurry under examination. After draining the slurry sample offluid and measuring the fluid volume, damp samples of the contained particulate material in the slurry areavailable for drying (if required) and measurement of one or more characteristics in an unbiased manner andwith a known degree of precision. The characteristics are measured by chemical analysis, physical testing orboth.The sampling methods described are applicable to slurries that require inspection to verify compliance withproduct specifications, determination of the value of a characteristic as a basis for settlement between tradingpartners or estimation of a set of average characteristics and variances that describes a system or procedure.Provided that flow rates are not too high, the reference method against which other sampling procedures arecompared is one where the entire stream is diverted into a vessel for a specified time or volume interval. Thismethod corresponds to the stopped-belt method described in ISO 12743.
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