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Copper, lead, zinc and nickel concentrates. Sampling of slurries 铜、铅、锌和镍精矿 泥浆取样
发布日期: 2017-06-22
BS ISO 11794:2017规定了对与液体混合的颗粒材料进行取样的基本方法, 通常是水,形成泥浆。在工业、采矿和矿物加工文献中,泥浆是 也称为纸浆,但本文件中未使用该术语。在非常高的细颗粒比率下 从固体到液体,如果材料呈软塑性,则正确地将混合物称为糊状物。 本文件不包括糊料取样。本文件中描述的程序适用于以下颗粒材料的取样: 以泥浆的形式在流动的溪流中运输,但不是加压泥浆。这些溪流可以自由流淌 或被限制在管道、流槽、水槽、水闸、螺旋或类似渠道中。 水泥浆的取样 静止的情况,例如在容器或水坝中沉淀或甚至搅拌良好的泥浆,则不适用 建议使用,本文件不包括。本文件描述了为提供代表泥浆的样品而设计的程序 受检泥浆的固体和粒度分布。将样品的泥浆排空后 测量流体体积,润湿泥浆中所含颗粒材料的样品 可用于干燥(如果需要)和测量一个或多个无偏差的特性 以已知的准确度和方式。这些特性是通过化学分析测定的, 物理测试或两者兼而有之。所述取样方法适用于需要检查以验证符合性的泥浆 根据产品规格,确定特性值作为结算依据 贸易伙伴之间或一组平均特征和方差的估计 系统或程序。如果流速不太高,其他取样所依据的参考方法 比较的程序是将整个水流分流到一个容器中一段特定时间或更长时间的程序 音量间隔。该方法与ISO 12743中描述的停止传送带方法相对应。交叉引用:ISO 12743:2006(R10)Ed 2ISO 12744:2006(R10)Ed 2ISO 13292:2006 Ed 2 ISO 11790:2010ISO 3534?1:1993购买本文件时,所有当前可用的修订都包括在购买本文件中。
BS ISO 11794:2017 sets out the basic methods for sampling particulate material that is mixed with a liquid, usually water, to form a slurry. In industry and in the mining and mineral processing literature, slurry is also referred to as pulp, but this term is not used in this document. At very high ratios of fine particulate solids to liquids where material assumes a soft plastic form, the mixture is correctly termed as a paste. Sampling of pastes is not covered in this document.The procedures described in this document apply to sampling of particulate materials that are transported in moving streams as slurries, but not pressurized slurries. These streams may fall freely or be confined in pipes, launders, flumes, sluices, spirals or similar channels. Sampling of slurries in stationary situations, such as a settled or even a well-stirred slurry in a holding vessel or dam, is not recommended and is not covered in this document.This document describes procedures that are designed to provide samples representative of the slurry solids and particle-size distribution of the slurry under examination. After draining the slurry sample of fluid and measuring the fluid volume, damp samples of the contained particulate material in the slurry are available for drying (if required) and measurement of one or more characteristics in an unbiased manner and with a known degree of precision. The characteristics are measured by chemical analysis, physical testing or both.The sampling methods described are applicable to slurries that require inspection to verify compliance with product specifications, determination of the value of a characteristic as a basis for settlement between trading partners 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 are compared is one where the entire stream is diverted into a vessel for a specified time or volume interval. This method corresponds to the stopped-belt method described in ISO 12743.Cross References:ISO 12743:2006 (R10) Ed 2ISO 12744:2006 (R10) Ed 2ISO 13292:2006 Ed 2 ISO 11790:2010ISO 3534?1:1993All current amendments available at time of purchase are included with the purchase of this document.
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发布单位或类别: 英国-英国标准学会
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