Pyrite resource profile
Globally, the total amount of sulfur in the elemental sulfur of the evaporite and igneous rocks plus natural gas, petroleum, oil-bearing sandstone and sulfide metal ore is about 5 billion tons. The sulfur contained in gypsum and anhydrite is almost infinite. The amount of sulfur resources in coal , oil shale and organic-rich shale reaches 600 billion tons, but the recovery cost of these sulfur resources is high.
Since the reserves of sulphur in crude oil, natural gas and sulphide ore are very large, and most of the world's sulphur production comes from the recovery of sulphur from these fossil fuel processing, the supply of sulphur is sufficient for the foreseeable future. Since petroleum and sulphide ore can be processed at a distance from their origin, the sulphur production from processing is not included in the reserves of the country. For example, oil in Saudi Arabia is refined and processed in the United States. Therefore, the geological reserves of sulfur in various countries are not counted.
In the foreseeable future, there will be a steady increase in sulfur production in the world, and the increase will be mainly due to the recovery of sulfur from natural gas liquefaction in the Middle East and the expansion of oil sands in Canada, unless the development of these areas is limited due to the global economic downturn.
The world sulfur production in 2013 and 2014 is shown in Table 1-1.
Table 1-1 World sulfur production /kt in 2013 and 2014 
Asphalt mixing plant is one of the key equipment for road construction. It is mainly used in the production of asphalt mixture for paving road surfaces. Asphalt mixing plant consists of a number of parts, including dosing system, dryer, agitator, dust removal system, fuel system and so on.
The batching system is one of the core parts of Asphalt mixing plant. It is responsible for adding various raw materials to the blender in a certain proportion. These raw materials include asphalt, sand, gravel and other additives. The batching system usually consists of a weighing sensor, a batching bucket and a batching transfer device.
The dryer is another important part of the Asphalt mixing plant. It is mainly used for drying raw materials such as sand and stones. There are heating elements and rotating agitators inside the dryer, which can make the raw materials fully heated and mixed evenly.
Mixer is one of the core parts of Asphalt mixing station. It is responsible for mixing various raw materials together to produce a high quality asphalt mixture. The agitator usually consists of multiple mixing blades, which can fully mix the raw materials to ensure the stable quality of the asphalt mixture produced.
Dust removal system is one of the important components of Asphalt mixing plant. It is mainly used to collect dust and exhaust gases generated during the production process. The dust removal system is usually composed of multiple filters, which can effectively filter out dust and exhaust gas to ensure a clean working environment and air quality.
Fuel system is one of the key parts of Asphalt mixing plant. It is responsible for providing the fuel to power the Asphalt mixing plant. The fuel system usually consists of a fuel pump, a fuel filter and a fuel injector.
Asphalt mixing plant is a kind of high efficiency asphalt mixture production equipment, widely used in road construction field. It has the advantages of high automation, high production efficiency, stable product quality and so on, and provides a strong support and guarantee for road construction.
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