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South Africa chromite sand casting
South Africa chromite sand casting , Originally from South Africa ,is a special kind of sand for casting , chromite sand casting is a natural spinel mainly composed of chromite , Chromite sand casting used as a highly fireproof sharpener for moulds and cores.

Purpose
1 foundry industry
Its properties enable the material to be used in high duty grey iron and steel foundries as core and mould making sand.
2 steel industry
In steel production, Chromite Sand Casting is used as well filler for protection of the sliding gate in large steel holding ladles.
3 glass industry
When ground to a fine flour, Chromite Sand casting is used for the production of green glass beverage containers

Counterweight iron sand.
The counterweight iron is a kind of iron ore raw materials in weight, its role is to balance. For example, the counterweight engineering machinery in sporting goods in weight.
For weight or pressure reuse of iron ore, iron ore, the proportion of general counterweight iron for 4.2 - 7.2 (bulk density of 2.5 - 4.8) between, customers are in terms of the drainage density (true specific gravity drainage density [1]). The product weight different needs of different proportion of the iron weight.

Counterweight iron sand density
The proportion of general counterweight iron for 4.2 - 7.2 (bulk density of 2.5 - 4.8) between, specifications: 0.2-2.0mm, customers often to drainage density (specific gravity), as the purchase of indicators. The product weight different needs of different proportion of the iron weight.
A small proportion of iron weight: 6.2-6.5 tons / m3 4.1-4.3 tons / m3 reactor
A large proportion of iron weight: 6.8-7.2 tons / m3 4.8-5.2 tons / m3 reactor

Physical and chemical index
Chemical composition
Content
Iron (fe)
More than 93%
Carbon (c)
Less than or equal to 0.50%
Manganese (mn)
Less than or equal to 1.20%
Silicon (si)
Less than or equal to 0.20%
Sulfur (s)
Less than or equal to 0.25%
Phosphorus (p)
Less than or equal to 0.05%

Counterweight iron sand use
1, sports and fitness activities counterweight
2, electric counterweight counterweight
3, concrete weight
4, the hull large mechanical engineering mechanical pressure
5, wear-resistant engineering, such as the airport runway, bridge pavement, pier, bridge, steel plant, etc..

Ceramsite sand
1, product introduction
Ceramsite is a kind of refractory particle with diameter of 0.020mm~2.00mm, mainly made of al2o3·sio2. It is ball-shaped particle made from fine bauxite , which is fused in high-temperature electric-arc furnace and sprayed to ball shape.
2, features of ceramsite
 1.Perfectly round shape with higher fluidity improves fill-in efficiency while reducing the resin level
2.Smooth surface of spherical shape greatly improves collapsibility after pouring
 3.Low gas evolution and high permeability ensures fewer or no defects
 4.High refractoriness and little thermal expansion ensures no burn-on and deformation
5.Artificial sand ensures stable chemical and physical properties
6.Almost neutral ph value allows both acid and basic binder.
 7.High durability ensures high reusability.
3, physical and chemical properties of ceramsite
ItemIndexItemIndex(%)
Bulk density(g/ cm³)1.79-1.95Al2o3>75%
Apparent porosity(%)1800Mgo0.23-0.7
Refractoriness under
Load (°c)1720Cao0.16-1.5
Thermal expansion rate%(10 minutes under 1000 °c))0.13Tio21.99-2.71
4, applications of ceramsite
1. Used in all types of foundry technique like resin-bonded sand, sodium silicate sand, and clay-bonded sand.
2. As core sand for making like jacket core, oil duct core and tappet core of engine.
3. Excellent replacement of chromite sand
4. As dry sand of sand box for epc process and v method of casting process.

Pink garnet sand 10-20mesh
Chemical Composition
SiO2:34-40%
Fe2O3:25-31%
Al2O3:17-21%
MgO:5-6%
MnO

Pearly sand
Perlite is a by acidic volcanic glassy lava through the broken, preheating, roasting and swelling and are made with porous structure, white, loose granular materials, which has the characteristics of small volume, low thermal conductivity, good chemical stability, non flammable, non-toxic, tasteless, sound-absorbing.
Pearly sand properties
1. Perlite is a adsorption ability is very strong material, it has good infiltration, infiltration of the pearlite sand surface is wet after the release of heat.
2 pearl sand is a small capacity, low thermal conductivity, good chemical stability of the material.
3 perlite or not flammable, non-toxic and tasteless, sound-absorbing material, has good effect in the industry.
Physical and chemical index
Component
Sio2
Al2o3
Fe2o3
Cao
Mgo
K2o
Na2o
Content
Seventy-five point four two
Fourteen point two six
One point zero one
One point seven two
Zero point three seven
Four point zero one
Three point two six
Pearly sand classification
One is the use of perlite building, the particles are relatively large, the intensity is relatively large. The other is the use of equipment insulation, mainly used to make filler, smaller particles, small strength, good thermal insulation.
Use of perlite
This product is mainly used for large ultra low temperature thermal engineering construction of the insulating layer, such as oxygen air separation unit, natural gas, liquid hydrogen, liquid nitrogen, liquid oxygen refrigerated transport such as travel. This product has good ultra low temperature thermal insulation performance.
The 1 is the perlite insulation materials, can be used to make some use of the roof insulation layer. Heat insulation effect is good, and some can also be used to make the use of crop cultivation soil configuration.
2 production of heat insulation brick used in the construction industry, etc..
3 making hand washing powder, washing powder of pearlite is other material cannot replace, structure and its screening is very strict.

Zircon sand is generally found in land of ancient coastlines,some of which can be found very far inland,where the heavier mineral sands formed hardened deposits.These deposits are typically mined via dry or wet(dredge)mining techniques.
Typical chemical analysis:
ZrO2+HfO2:65.5-66.5%
Fe2O3:0.04-0.07%
TIO2:0.15-0.19%
Al2O3:0.40-0.90%
P2O5:0.06-0.09%
SiO2(Total):32.2-33.2%
Free SiO2:0.25-0.45%
Physical Properties
Refractive Index:1.93-2.01
Specific Gravity:4.6-4.71g/cm3
Mohs Hardness:7.5+
Melting Point:2340-2550
Packing:30/40kgs pvc bags+1mt big bag
Main Applications
Foundry Ceramic Chemical Glass Refractory abrasive washing/Cleaning/Blasting and nuclear industry etc
Available Sizes:60-100mesh  80-120mesh  100-200mesh 200-325mesh 200mesh 325mesh 2000mesh

CHEMICAL COMPOSITION

Fe2O3: 25-31%

Al2O3:17-21%

MgO:5-6%

SiO2:34-40%

CaO:5.0-10.0%

MnO:0-1.0%



PHYSICAL PROPERTIES

Specific Gravity:3.8-4.1g/cm3

Bulk Density:1.8-1.9 g/cm3

Hardness (Mohs):7.5-8.0

Melting point:1300 C

Grain shape:Sharp, Angular

Chloride content 25ppm

Acid solubility(HCL) 1%

Conductivity 25 ms/m

Toxic substances:None


AVAILABLE SIZES
10-20mesh 20-40mesh 30-60mesh 80mesh

PACKING
25kgs pvc bags 1mt big bag or 1mt big bag

Introduction of honing stone
In principle, the perfect honing stone consists of three different main components, which offer the required cutting.
Abrasive
The abrasive is the most important component of each honing stone. Synthetic diamonds or cubic boron nitride (CBN) in various grit sizes are used.
Bond
The second component is the metal bonding which is responsible for the proper adhesion of the abrasive crystals warranting excellent wear performance.
Steel Blank or Carrier
The copper-plated steel blank is the third and last component and is the support material of each honing stone in a drawn, galvanized form.
The abrasive and the bond are weighed, mixed, and proportioned according to exactly define operation plans. The premixed portions are then filled into prepared sintering molds and fitted with the appropriate steel blanks. After this, all three elements are sintered under high temperatures. During the sintering process, an abrasive layer develops.

Applications of diamond and cbn honing stone

materials of workpiece: carbide,glass and ceramic,cast iron,alloy steel,tool steel,die steel,hardened steel copper,aluminum alloy and other abrasive resistant materials.

Applicable area:fine grinding engine pump body,hydraulic cylinder bore,hydraulic pump inner bore,cylinder block,valve,oil cylinder nozzle,the inner surface of the spline bore and cylinder hole and blind hole of other series.

Applicable honing machine:sunnen,nagel,belden,accucut,engis,and other types of high-production honing equipment.