项 目
|
指 标
|
|
优 等 品
|
一 等 品
|
|
碳酸钡(BaCO3)
|
≥99.8%
|
≥99.5%
|
锶(Sr)
|
≤0.05%
|
≤0.10%
|
钙(Ca)
|
≤0.03%
|
≤0.03%
|
钠(Na)
|
≤0.01%
|
≤0.01%
|
铁(Fe)
|
≤0.0005%
|
≤0.0008%
|
氯化物(Cl)
|
≤0.005%
|
≤0.005%
|
碳酸镁(MgCO3)
|
≤0.005%
|
≤0.005%
|
盐酸不溶物
|
≤0.01%
|
≤0.02%
|
灼烧失量(800℃)
|
≤0.4%
|
≤0.4%
|
水分(110℃)
|
≤0.1%
|
≤0.1%
|
平均粒径(μm)D50
|
≤1.50
|
≤1.50
|