GB/T 46596-2025 Copper,lead,zinc and nickel concentrates—Sampling of slurries

Scope

This document specifies the basic methods for sampling mineral slurries formed by mixing mineral particles with liquids (usually water). In industrial and mining and mineral processing literature, mineral slurries are also referred to as slurries, but this term is not used in this document. When the ratio of solid to liquid is very high, the material is in a soft plastic state, and this mixture is specifically called paste. This document does not address the sampling of paste. The procedures described in this document are applicable to the sampling of mineral particles transported in the form of slurries, but not to pressurized slurries. The slurry flow can be free-falling or transported through pipes, chutes, troughs, sluice gates, spiral chutes, or similar channels. This document does not recommend or address the sampling of static slurries (such as slurries that have settled or been mixed evenly in containers or dams). This document describes procedures designed to provide representative samples that represent the quality characteristics and particle size distribution of the solids in the slurry to be tested. After filtering the slurry sample and measuring the liquid volume, the wet sample containing mineral particles in the slurry can be dried (if necessary) and one or more of its quality characteristics can be measured by chemical analysis, physical testing, or a combination of both in an unbiased manner and with known precision. This document is applicable to slurries required for testing to verify compliance with product specifications, and the measurement results of their quality characteristics are used as the basis for settlements between trading partners or for estimating a set of average characteristics and variances to describe a system or process. If the flow rate is not too high, the reference method is to control the transfer of the entire slurry flow to a container within a specific time or volume interval. The reference method correspon

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