Silica sand making machine

Silica sand is used throughout the world, and in so many different ways it is hard to imagine a world without it. From water filtration, to glass manufacture, to industrial casting, to sand blasting, to producing concrete, to adding texture to slick roads, silica sand impacts every aspect of daily life. One of the major uses of silica sand in the modern world is as an ingredient in industrial concrete. Silica sand produces the bulk of a great deal of concrete, although some concrete bypasses its use for safety and strength reasons. At industrial scales, silica sand can cost less than $0.50 US Dollars (USD) per pound, while the consumer rate is around $1.50 USD per pound.

The mined mineral from silica sand deposit quarry will be fed into jaw crusher or impact crusher for primary crushing, after primary crushing, the crushed silica sand will be fed into cone crusher and VSI crusher for fineness crushing. After crushing, the crushed silica sand will be sieved into different grades by vibrating screen. And washing plant will clean up the crushed silica sand by grades.

Sand & gravel processing plants

The site was conceived in 1989 out of marshland and features a 200m cofferdam with a jetty that receives cargoes of sea-dredged aggregate from Hanson’s own fleet; predominately from the Norfolk coast and the English Channel. Hanson had been operating the old plant since March 1990. “It was basically mobile kit stuck up on stilts which corroded quite quickly,” says Mike Smith - Unit Manager at Frindsbury. The old plant was fed by a loading shovel, which carried materials to be processed 120 metres to the plant feed hopper with crushing of larger sizes involving mobile equipment. This meant that materials were first processed then stored, crushed and then processed again.

Coarse sand contained in the underflow from the bottom deck of the primary screen is recovered by a new Linatex sand plant arrangement. The slurry is fed initially to a 1,676mm diameter Linatex S-type classifier. From here a 75kW Linatex Mk III 200/150mm centrifugal pump is used to pump the denser underflow to a tower-mounted Linatex HK200 sand separator/dewaterer via 200mm diameter suction pipework and trestle-mounted delivery pipework. The separator tower includes three sets of Linatex-lined discharge chutes and is of sufficient height to provide a coarse-sand stockpile capacity of 3,750 tonnes. The overflow from the sand separator is delivered to the site's extensive effluent-treatment lagoons via 250mm diameter return pipework and an effluent buffer tank, with facilities provided for partial recirculation of the slurry by means of butterfly valves.

Crushed Stone Processing

Stones are air classified according to size or density. Air classification provides the most effective means for separating a product from a feed stream, for dedusting, or when used in conjunction with grinding equipment for increasing productivity. Stones can be reduced in particle size with Sturtevant’s crushers. The crushers are best-suited for controlling the reduction of friable materials to granules where fines are undesirable. Crushers also reduce particle size for fine grinding to coarse crushing capabilities.

Mining of crushed stone or sand and gravel is dependent on the geologic characteristics and the extent and thickness of the natural deposit. Open-pit mining and quarrying are most commonly used, although some stone is mined underground. Sand and gravel deposits above the water table are excavated with bulldozers, front-end loaders, tractor scrapers, and draglines. Deposits below the water table, including stream and lake bed deposits may be excavated with draglines or from barges using hydraulic or ladder dredges. Mining and quarrying stone generally require drilling and blasting, after which the rock is then transported to a processing facility on trucks and conveyors.

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