T/BYXT 062-2024 Rare earth-based zeolite mineral soil amendment

Scope

Scope: This document specifies the term definitions, technical requirements, test methods, inspection rules, labeling, packaging, transportation and storage, and sales and service requirements for rare earth zeolite mineral soil improvers. This document is applicable to the production and sales of rare earth zeolite mineral soil improvers; Main technical content: Technical indicators Indicator Superior grade First grade Zeolite mineral content (mass fraction) /% ≥80.0 ≥60.0 ≥50.0 Rare earth elements (calculated as lanthanum and cerium oxides) g/L ≤0.25 ≤0.20 ≤0.10 Water content (HO2) /% ≥8.10 ≥12 Particle size (through a 325-mesh sieve) /% ≥95 -- (through a 200-mesh sieve) / ≥95 pH (1:250 water immersion solution) 5.0–6.5 Single trace elements (as elemental) /% Effective calcium ≤3.0 Effective magnesium ≤4.0 Effective manganese ≤2.5 Effective zinc ≤1.5 Effective potassium ≤1.5 Total sulfur ≤0.5 Heavy metal limit components Chlorine (Cl) ≤0.000059% 1.0% 3.0% Sodium (Na) ≤0.03% 1.0% 3.0% Mercury (Hg) ≤1 ppm 2 ppm 5 ppm Arsenic (As) ≤5 ppm ≤5 ppm ≤5 ppm Cadmium (Cd) ≤2.6 ppm ≤5 ppm ≤10 ppm Lead (Pb) ≤10 ppm ≤20 ppm ≤25 ppm Chromium (Cr) ≤5 ppm ≤5 ppm ≤5 ppm a The zeolite mineral in the product shall comply with the requirements of 4.1. b Water-soluble lanthanum and cerium rare earth elements. c The water content shall be based on the factory inspection data of the manufacturer. d The particle size of products with special shapes or larger particles (except for powder) may be determined by agreement between the supplier and the buyer. e When calcium, magnesium, manganese, zinc, and sulfur are indicated on the packaging of the product, this item shall be tested.

Development Information

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