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Sulfur Powder: Brimstone Ground and Sieved
Lump sulfur (brimstone) is soft and brittle; ground in a mortar and sieved it becomes the fine yellow powder used for gunpowder and sulphur matches (Ure). Andrew Ure (1839) notes it kindles at a moderate heat, so the dust is kept away from flame.
The picture: sulfur powder.
初学者
Half an hour
说明
1
1
Break and grind
Break and grind
Break the sulfur into small pieces and grind them in a mortar, a little at a time. Wear a dust mask and goggles (our precaution).
此步骤所需材料：
硫200 克所需工具：
研钵与研杵
防尘口罩
化学防溅护目镜2
2
Sieve
Sieve
Shake the ground sulfur through a fine sieve and grind what stays on top again.
所需工具：
细筛防尘口罩3
3
Store away from flame
Store away from flame
Keep the powder in a closed jar, cool and away from any flame or spark: it catches fire easily.
所需工具：
玻璃罐此蓝图制作
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