Among all minerals, quartz is an almost pure chemical compound with stable physical properties abundant in nature.

This mineral has a hardness of 7 on Mohs scale and its density is 2.65 grams per cubic centimeter.

Quartz stone is a SiO4 compound in which each silicon is attached to 4 oxygen and has a rhombic structure. The main mineral is silicon quartz crystallized and reveals all its physical and chemical properties in

this condition. Quartz is not sensitive to most acids and bases except fluorhydric acid.

Jam Silica Processing ore deposit involves types of silica sedimentary deposits resulting in erosion of a rich igneous mass of quartz and its transport by water. According to the results of microscopic and lithological studies, due to the fact that more than 95% of the particles making up this stone are quartz minerals and have good sorting, so it has been identified as quartz arenite based on the Folk classification.

Chemical composition and granulating distribution are the most important factors determining the industrial usage of silica. In comparison to the chemical composition of Jam Silica Processing ore deposit with the standard values provided in the industry indicates the applicability of this mineral in the production of various types of glass, Pyrex and opal containers, which requires processing of this stone and removal of impurities and regulation of its granulation.

In Jam Silica Processing Company, the first step in silica processing is crushing the stone.It is done by crushing section including a jaw crusher, a vertical shaft impactor, a conical crusher, and a set of screens and conveyors, and by crushing the stone to the appropriate sizes releases minerals from each others. The product of this section is

crushed silica with a grain size of 0 to 2 millimeter, which will be proper for soggy processing lines (wet processing). It should be noted that the crushing line machines of this company are made by the Swedish company, SANDVIK, which due to the use of special steel alloy, in addition to add the least amount of iron into the product of this section; It results in an increase in the feeding volume and the grain size range of the input materials to each device.

For example, the jaw crusher is capable of crushing 500 tons per hour of raw materials with a maximum size of 750 millimeter. In addition, the crushing section has been covered with dust cover equipment due to environmental considerations.

The process of washing, separation and granulation of silica powder, which isperformed in this complex by advanced and engineered machines of the German company AKW, is the first time in Iran where the quality of silica powder procured competes both in terms of granulation accuracy and purity of silica in Iran and the Middle East, as well as with the best silica, Sibelco Belgium.

The quality of the procured silica is much higher than the need for float glass production and can be used in the production of pharmaceutical, cosmetic, opal and arcopal containers. The processing line consists of a set of screens, hydro cyclones, hydrosizers, spirals, wet crusher, attrition machine, and pumps, in which the mineral is crushed in a physical process and washed with water. After removing harmful minerals contaminations such as’ aluminum oxide, iron oxide and titanium oxide, its granulation is adjusted and after dewatering, it enters the third phase.

Because silica contains a maximum of 20% by weight of moisture, to remove this moisture, the product enters the rotary dryer with a loader, box feeder and conveyor that can dry silica powder up to 40 tons per hour. After leaving from the dryer, the silica powder is ready to be loaded and transferred to the warehouse silos with the help of horizontal and vertical conveyors.