Sand Grinding Machine

A comprehensive line of grinding mills and entire grinding systems for mining, industrial minerals industry, coal and cement.

Grinding Mill Manufacturers

Xuanshi is one of the largest grinding mill manufacturers in China. We offer variety kinds of grinding mill and stone crusher equipment. Please contact us directly through “Live Chat” to get latest info of sand grinding machine price for sale in India, Nigeria, Australia, Saudi Arabia, Indonesia, Pakistan, Peru, Mexico, Colombia, South Africa, Kenya, Algeria, Egypt, Ghana, Zimbabwe, Iran, Chile, Malaysia, Philippines, Sri Lanka, UAE, Zambia, Ethiopia, Sudan, Tunisia, Ukraine, Uzbekistan, Yemen, Uganda, Argentina, Oman, Congo, Germany, etc. 24/7 online support for you!

We manufacture a comprehensive line of grinding mills and entire grinding systems for mining, industrial minerals industry, coal and cement, including classifiers and related accessories for both wet and dry grinding systems. We offer a complete spectrum of engineering services, including testing, process design, installation, commissioning, start-up, and continuous lifetime product support services.

Sand Grinding Machine

The sand grinding machine disperses by stirring a pigment/vehicle mix with disc rotors in the presence of coarse sand. Rotors, usually made of abrasionresistant metal alloys, are attached to a vertical shaft rotating at 2,400 rpm (for 7.5 cm diameter rotors). Mill base to sand ratio is preferably 1/1 by volume. Consistency is similar to that used in pebble mills. In laboratory batch processes, pigment and vehicle are premixed for a few minutes in appropriate equipment. Then sand is added and the mixing continued for about 1 min. The batch is then ground with the rotors, with cooling water circulating around the container to keep the temperature fairly constant and not too high. When dispersing TiO2, good fineness is obtained in 5–10 min; longer grinding does not improve it appreciably. The mix is removed and strained through a 40–60 mesh screen to remove sand.

In continuous processes in laboratories or plants, premixed bases are fed continuously into the grinding unit containing the sand and drained continuously from it through a screen to hold back the sand. Most units are bottom fed by a pump and overflow at the top. In general, pigment mix-in properties are not important because the grind base is not of heavy consistency, but if a pre-mix contains many small lumps, a slightly longer retention time in the grinding unit may be required to obtain a given fineness. Large, hard lumps cannot be ground because they cannot be acted on properly by the small sand particles.

Consistency of TiO2 grinds is not extremely critical, but if the base is too thick or thin because of incorrect formulation or temperature control, poor fineness may result. A thin batch may also be discolored through excessive abrasion of the rotors. In the laboratory batch process, if pigment flocculation exists, it is difficult to separate the sand from the ground mix because the mix will not flow much under the influence of gravity.

Sand Grinding Machine