sulphur extraction

Extraction of Sulphur - Large deposits of natural sulphur are found is Sicily and Louisiana. It is extracted by two processes. Sicilian process Frasch proces..

Sulphur is extracted from underground deposits by pumping superheated steam (-440 K) down the beds to melt the element and then blowing out the molten sulphur with compressed air. This process is known as Frasch proces..

Large deposits of natural sulphur are found is Sicily and Louisiana. It is extracted by two processes. (i) Sicilian process (ii) Frasch proces..

Sulphur has a low melting point of about 112 o C - 115 o..

Extraction of Iron is done in many steps like oxidation, combustion, fusion, reduction, etc. During extraction cast iron is formed first which is then converted to wrought iron. Hematite is the ore that is used for extraction of cast iron. The ore is crushed into smal..

Sulphur occurs in the earth's crust to the extent of 0.05% mostly as metal sulphides and sulphates. It also occurs in the elemental form in large underground beds. Another major source of sulphur is H 2 S present in the natural gas and crude oil. Sulphur exists in comb..

A small piece of sodium is heated gently in an ignition tube till the sodium melts. About 50 to 60 mg of the organic compound is added to this and the tube heated strongly for 2-3 minutes to fuse the material inside it. After cooling, the tube is carefully broken in a china dish containing about 2..

The chief ore of tin is cassiterite or tinstone, SnO 2 . This ore contains about 10% of tin. Tin is extracted from cassiterite through the following steps: 1. The crushed ore is washed with water to remove lighter impurities. 2. The ore is then roasted to remove arsenic an..

Occurrence of Sulphur Dioxide - Sulphur dioxide is present in volcanic gases; in hot aqueous springs surrounding volcanic regions; in areas where sulphur is extracted by melting it, and in places where coal containing sulphur or sulphur co..