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Description
Gravel is used in Water Filtration with water treatment Filtration products Silica Sand, Anthracite, Activated Carbon, Birm, Pumice and Garnet in portable water treatment, surface water treatment, swimming pool water treatment, R.O. reverse Osmosis treatment plant and wastewater treatment also in conventional water treatment filters. Filter Gravel is an extremely effective filter media because of its ability to hold back precipitates containing impurities. Filter sand size, angularity and hardness are the important filter sand characteristics to ensure proper filtering. In slow sand filters, the gravel is normally on the bottom layer and is used as channels for filtered water to make it to the outlet lines. Sand will often plug the holes in the outlet pipe and the gravel helps prevent that. The primary role of the gravel in the bio-sand filter is to prevent clogging of the PVC pipe with sand. The first layer is sufficiently deep to cover the inlet to the pipe and should be large enough to keep the openings in the filter bottom free for the flow of water out of the filter, and the upper layer fine enough that the overlying filter sand will not sink into its pores.

Sand and gravel are used for road construction, for mixing with asphalt, as construction fill, and in the production of construction materials like concrete blocks, bricks, and pipes. It is also used to make roofing shingles, used on icy roads in the winter, for railroad ballast, and water filtration. The quarry is often where our gravel and other aggregates are excavated and where rocks such as sandstone and basalt are crushed down to size.

We have readily available Disposable Face Mask FOB ready for shipment from our warehouse in India.

Specification:
3 Layer, Non-Woven Fabric, Skin Friendly, Breathable and manufactured in a high sterile condition which help us to provide the best quality masks for your usage.

Price:
1 mask price FOB 0.33 USD

Available Quantity:
1,000,000 Mask

Terms and Condition:
100% Advance Payment upon confirmation of order

Delivery Type:
FOB in Mumbai Port, India

Trader Operational Headquarter:
Dammam,KSA

we have MS pipe unused in scrap rate

Description
Marble Powder Calcium Carbonate is considered the second purest source of calcium carbonate in nature, where the percentage of calcium carbonate reaches 97% CaCo3. After the stage of mining and extracting raw marble from our quarries in the Kingdom, it is crushed in our crushers to get marble chips. Then sorting it from impurities, sifting it, and grinding it to get marble powder called calcium carbonate. It is used in many industries after being sifted and classified in our factories. It can also be used to equalize the pH to reach PH7 in water treatment projects.

It contains more than 19.5% of magnesium oxide and more than 29% of calcium oxide. It is less than 0.3% of silicon oxide, less than 0.7% of alumina oxide, and less than 0.1% of iron oxide, (or less than 0.03-0.04% of iron oxide for unpainted glass). Dolomite marble powder is added in sizes from 100-250 microns.

In the coating industry (paints), marble powder calcium carbonate is an essential material, as it forms from 30 - 40% of the paint components and is preferred over calcium carbonate powder due to its crystalline nature. The powder is included in the process of manufacturing paint as a filler to improve some of the paint's natural properties such as thermal resistance, thermal conductivity, density, controlling viscosity, preventing flow, reducing oil absorption, and increasing hardness, by combining it with particles of colored or adhesive materials to form a cohesive and stable material with a high flow. The granular size of the powder should not exceed 20 microns. Some of the paints used in exterior wall cladding require marble powder in sizes 0.3 to 1.2 mm.

In the plastics industry, marble powder is used as a basic material in the manufacture of many plastic products such as water and drainage pipes, electrical cables, some parts of electrical equipment, some auto parts, children toys, plastic bags, tableware food preservatives and dishes, decorations, and others. It improves the physical properties of the plastic product, it makes it resistant to deformation as it increases its hardness and resistance by increasing the modulus of elasticity. It reduces the thermal expansion coefficient, makes it have a good external appearance and soft touch, and keeps it from sloughing. In addition, it makes it easy to form by increasing its fluidity and dispersion and reducing production costs.

Ash % 2.2
Volatile matter % 47.7
Fixed Carbon % 0
Sulfur % 5.5
Moisture @ 105oC % 50.1
Vanadium (V) 0.62%
Nickel 0.097 ppm
Aluminum (Al) 183
color black
appearance Fine Black Powder
Total carbon Content 47.49%