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Back in the late 50"s we would mix Zinc Dust 70 % then Charcoal 20 % , Sulfur 10% which made great rocket fuel etc.
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∙ 15y ago
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Why is coal dust build out of coal mining in the enclosed area dangerous?
any concentration of dust is potentially explosive
What are the six physical properties associated with hazard recognition of hazardous materials chemicals?
vapor pressure evaporation rate flashpoint upper explosive limit lower explosive limit
How do you activate zinc dust?
Procedure to activate zinc dust: 1. Measure out 0.060 g zinc dust, put in a medium sized test tube 2. add 2 drops of water (distilled) 3. add 6 drops of 3M HCl, you should see bubbles if you do not add more HCl 4. let this react for 30 seconds 5. add water until the zinc settles to the bottom of the test tube 6. decant off the water The zinc is ready to be used. Use it RIGHT AWAY!
What is the lel of h2s?
The H2S auto explosive limit between (4.3 - 46)%,this called explosive mixture for hydrogen sulfied.
In which process zinc chloride is by products by use zinc dust?
Zn(s) + 2HCl ==> ZnCl2(aq) + H2(g)
How do you make at zinc dust by process of the sublimating?
The zinc metal is molten and vaporized then cooled forming dust of zinc. Ing. Jorge Zamalloa Barrera I Worked in zinc refinery in Peru "Minero Peru"
Why is dust explosive?
its a starch and burns easily
What is lel?
lower explosive limit
What is the difference between zinc dust and zinc flake?
Zinc flake is the solid material which is having 100% quality , zinc is the residue
What happens when you mix sulfur and zinc dust?
Nothing
What is the lower explosive limit of hydrocarbon product?
60%
The properly posted explosive limit sogn requires the NET Explosive weight and?
Hazard classification/division
Why is coal dust build out of coal mining in the enclosed area dangerous?
any concentration of dust is potentially explosive
What are the six physical properties associated with hazard recognition of hazardous materials chemicals?
vapor pressure evaporation rate flashpoint upper explosive limit lower explosive limit
What are the six physical properties associated with hazard recognition of hazardous materials and chemicals?
vapor pressure evaporation rate flashpoint upper explosive limit lower explosive limit
How are volcanic dust clouds made?
From the explosive reaction of a violent eruption..
In combustible monitors what does LEL stand for?
Lower Explosive Limit
