YS/T 452-2013Lead and zinc bulk concentrate (English PDF)

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules.

Instead of the standard YS/T 452-2002 "mixed lead and zinc concentrates." Compared with YS/T 452-2002, the main changes are as follows.

--- Increased mercury limit requirements;

--- Increased natural radioactivity limit requirements;

--- Three and four items from the product Cd content of not more than 0.35% and 0.40%, respectively, modified to not more than 0.40% and 0.50%;

--- As four product content of not more than 0.45% by the modification of not more than 0.40%;

--- SiO2 content is made not more than 4.5%, 5.0%, 5.5%, 6.0%, respectively, modified to not more than 4.0%, 4.5%, 5.0%, 5.5%;

--- Fe content of from 5% to 14% revised to 6% to 15%;

--- Removed Cu limited requirements;

--- Modification of the test batch;

--- Delete test items Terms of contents;

--- Sample prepared by the three revised to four, the addition of a sample arbitration; relating to international trade while the retention time of the sample were Regulations;

--- Determination of test results has been modified.

This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized.

1 Scope

This standard specifies the mixing of lead and zinc concentrate requirements, test methods, inspection rules, packaging and transport and contract (or purchase order) content.

This standard applies to the mixed sulphide ore flotation of lead and zinc concentrates obtained, also apply to other methods selected to be a mixture of lead and zinc concentrates.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 8170 repair value expressed about the rules and limit values and judgment GB/T 14262 flotation lead concentrates in bulk sampling and sample preparation method GB 20424 heavy metal concentrate product specification limits of harmful elements GB 20664 non-ferrous minerals natural radioactivity limits YS/T 461 (all parts) mixing chemical analysis of lead and zinc concentrates

3 Requirements