Zircon Sands

Product Information

Physical and Chemical Properties
Chemours offers five grades of zircon sands that vary in
the level of zircon (zirconium silicate) and other mineralcontent as outlined in Table 1.
Solubility and Reactivity Information
Chemours zircon sands are:• Insoluble in water, dilute acids, and hot, concentrated
sulfuric acid
• Very slight solubility in hydrofluoric acid
• Reactive with hot, concentrated alkali solutions• Nonreactive with cold, dilute alkali solutions
Zircon Applications• Precision investment casting• Zirconium metal and chemicals• Foundry specialty sand• Refractories and refractory coatings• Ceramics• Abrasives

Personal Safety
For safety information, please visit the product Safety
Data Sheet (SDS).
PackagingChemours zircon sand is available in 50-pound
multiwall paper bags, semi-bulk (1-ton and 2-ton)bags, bulk hopper rail cars, and bulk pneumatic
trucks. Department of Transportation (DOT) Hazard
Classification*: NOT REGULATED.

* Due to changing governmental regulations, such as those of the Department ofTransportation, Department of Labor, U.S. Environmental Protection Agency, andthe Food and Drug Administration, references herein to governmental requirements
may be superseded. Each user should consult and follow the current governmental
regulations, such as Hazard Classifications, Labeling, Food Use Clearances, Worker
Exposure Limitations, and Waste Disposal Procedures for the products described inthis literature.

Figure 1. Thermal Expansion Coefficients ofMineral Sands
Hollow Confined Expansion (Equilibrium), cm/cm•°C (in/in•°F)

Chemours zircon sands are naturally occurring rounded tosub-rounded mineral grains that are mined from mineralsand deposits in the southeastern United States. Thezircon sands are washed to ensure a clean product free ofdirt, dust, and ultrafines, and are then calcined to reducewater and other volatile content. The zircon grains are
separated from other sands by physical processes to
produce uniform, high-quality products.

0.081(0.045)0.072(0.040)0.063(0.035)0.054(0.030)Silica0.045(0.025)0.036(0.020)0.027(0.015)eOlivin0.018(0.010)

mite
Chron
Zirco

0.009
(0.005)0.000
93.3(200)

204.4(400)315.5(600)426.7(800)537.8(1000)

648.9(1200)Temperature, °C (°F)

760.0(1400)

871.1(1600)

982.2(1800)

1093.3(2000)Zircon Sands

Table 1. Chemical, Mineral, and Physical Properties
Typical Screen Analysis**
U.S.
Sieve
No.*

Sieve
Opening,µm

50300
70
212
100
150
140
106200
75
270
53
PAN
<53AFS Grain Fineness Number
D50 (Mean)

ZrO2***
TiO2
Al2O3
Fe2O3
Free Silica***

ZirconKyanite and Sillimanite
RutileOther

Bulk Density (Uncompacted)
Specific Gravity
Hardness (Mohs)
Melting Point
Coefficient of Linear Expansion
pH% Retained on Sieve
Premium Zircon

Low Alumina Zircon

Mean
Std. Dev.
<1<113
5.8
61
4.7
24
4.1
1
1.0
<1107
3.9
120 Mesh (125 µm)

Standard Zircon

Zircon T

Mean
Std. Dev.
Mean
Std. Dev.
Mean
Std. Dev.
<1<1<11
1.0
1
1.0
1
1.0
17
4.7
19
4.5
17
5.1
58
4.9
53
5.1
54
4.9
23
3.3
24
3.7
24
4.3
2
0.9
3
1.6
2
1.3
<1
<1<1105
3.1
106
4.2
106
5.1
120 Mesh (125 µm)
120 Mesh (125 µm)
121 Mesh (124 µm)
Chemical Composition
Premium Zircon
Low Alumina Zircon
Standard Zircon
Zircon T
Spec. %Typ. %**Spec. %
Typ. %**
Spec. %
Typ. %**
Spec. %
Typ. %**
66.5 min.
66.7
66.3 min.
66.5
65.0 min.
65.9
64.0 min.
65.2
0.15 max.
0.13
0.25 max.
0.21
0.35 max.
0.27
2.0 max.
1.00
0.50 max.
0.24
0.80 max.
0.50
2.00 max.
1.15
2.5 max.
1.10
0.05 max.
0.02
0.05 max.
0.04
0.05 max.
0.04
0.5 max.
0.07
0.05 max.
0.01
0.10 max.
0.05
0.20 max.
0.10
0.5 max.
0.10
Mineral Composition (Typical %)**
Premium Zircon
Low Alumina Zircon
Standard Zircon
Zircon T
99.3
99.1
98.5
97.6
0.5
0.8
2.0
1.5
0.1
0.2
0.3
0.7
<0.1
<0.1
<1.0<1.0
Physical Properties
Range
2643–2804 kg/m3 (165–175 lb/ft3)
4.62–4.67
7.5
2100–2300 °C (3810–4170 °F)
7.2 × 10–6 cm/cm·°C (4.0 × 10–6 in/in·°F)
6.0–8.5

Zircon M
MeanStd. Dev.
<1<113
5.052
6.0
30
5.03
2.0
<1112
5.0
125 Mesh (120 µm)
Zircon M
Spec. %
Typ. %**
60.5 min.
62.5
2.6
0.8
0.5
0.1
Zircon M
94.9
1.30.8<1.0*U.S. Sieve Series according to ASTM E-11-70.
**These columns give typical values based on historical production performance. Chemours does not make any express or implied warranty that future production will conform to thesetypical values.
***Values calculated based on concentrations of other elements.

CAUTION: Do not use or resell Chemours™ materials in medical applications involving implantation in the human body or contact with internal body fluids or tissues unless agreed to by Seller in a writtenagreement covering such use. For further information, please contact your Chemours representative. These products may not be directly added to food, pharmaceuticals, cosmetics, or cigarette
papers/filters for tobacco products.
For medical emergencies, spills, or other critical situations, call (844) 773-2436 within the United States. For those outside of the United States, call (302) 773-1000. The information set forth
herein is furnished free of charge and based on technical data that Chemours believes to be reliable. It is intended for use by persons having technical skill, at their own discretion and risk. The handlingprecaution information contained herein is given with the understanding that those using it will satisfy themselves that their particular conditions of use present no health or safety hazards. Because
conditions of product use are outside our control, Chemours makes no warranties, express or implied, and assumes no liability in connection with any use of this information. As with any material,evaluation of any compound under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate under or a recommendation to infringe any patents.
NO PART OF THIS MATERIAL MAY BE REPRODUCED, STORED IN A RETRIEVAL SYSTEM OR TRANSMITTED IN ANY FORM OR BY ANY MEANS ELECTRONIC, MECHANICAL, PHOTOCOPYING, RECORDING OR OTHERWISEWITHOUT THE PRIOR WRITTEN PERMISSION OF CHEMOURS.

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