Daohong® glass beads have been and continue to be used as grinding or dispersing beads, either as a cost-effective alternative to more expensive ceramic beads or for performance reasons in older, less powerful mills. SiLibeads® glass beads are also used for grinding sensitive grinding materials for which ceramic beads cannot or may not be used for various reasons.
 
Due to the synergies between ceramic and glass grinding beads, we are specialists in the field of wet grinding. Our extensive know-how in wet grinding technology enables us to optimize our glass beads for the use as grinding beads. Moreover, we use agitator bead mill grinding beads in our production and in our technical centre and thus can provide our customers with practical advice and optimise their production processes with suitable measures.
· Our Minimum Order For Medium Glass Beads is 2 bags per order.  These beads come in 44 lb containers.
· Packaging:  44 lb bags on a pallet, 50/pallet = one metric ton (2,200 lbs) per pallet is standard packaging.
· Glass Bead Applications:
o Wet Bead Milling
o Wet Grinding
o Dispersion of paints, coatings, chemicals
o Decorative:  Used in wall finishes, plasters, and paints for texture and shimmer
o Water Filtration: The beads are being used in place of gravel because of their endurance, roundness, and higher crush strength. 
o Grinding paints, pigments and chemicals, minerals, pharmaceuticals, Agro Chemicals, Inks, Dyes, Coatings
o Mechanical and Galvanized Plating
o Filler for use in electronics to protect against explosion
o polishing element for optics
o spacer beads
· Pricing Quotes:  Email us with your destination zip code, quantity, and size of glass bead.  We will work up a freight rate for you.
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Sizes Available:    
 
 

STOCK #	SIZE (mm)	NET WT	Approx. Mesh Size
3	0.25-0.5	44 LB	50-60
5	0.4-0.6	44 LB	30-40
7	0.6-0.8	44 LB	20-30
9	0.75-1.0	44 LB	18-20
11	1.00-1.25	44 LB	16-18
14	1.25-1.65	44 LB	13-16
17	1.55-1.85	44 LB	11-13
19	1.7-2.1	44 LB	10-12
22	2.0-2.4	44 LB	08-10
25	2.40 - 2.90	44 LB	7.5-08
30	2.85-3.45	44 LB	06-07
35	3.4-4.0	44 LB	5.5 - 06
40	3.8-4.4	44 LB	05 - 5.5

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Chemical Analysis Glass beads made of soda lime glass; CAS-Nr. 65997-17-3 / EINECS 266-046-0
Name	Method	Weight		CAS-No.	EINECS
		reference value in Weight-%	tolerance value in Weight-%
Silicon dioxide SiO2	DIN 51001	72,50%	+/- 0,90	7631-86-9	231-545-4
Sodium oxide Na2O	DIN 51001	13,00%	+/- 0,80	1313-59-3	215-208-9
Calcium oxide CaO	DIN 51001	9,06%	+/- 0,28	1305-78-8	215-138-9
Magnesium oxide MgO	DIN 51001	4,22%	+/- 0,10	1309-48-4	215-171-9
Aluminium oxide Al2O3	DIN 51001	0,58%	+/- 0,18	1344-28-1	215-691-6

 
General Specifications and Technical Data:
 

Roundness	Article 52xx in size 0,1 - 0,8 mm: ≥ 0.89 (ratio width/length (xmin/xmax) Article 45xx in size 1,0 - 3,0 mm: ≥ 0.95 (ratio width/length (xmin/xmax)
Compressive	strength up to 2.100 N (belonging to diameter)
Refractive index	1.5188
Air bubbles inside bead (> 0,3mm)	≤ 2,5 % Visual test: internal control of 200 Glass beads by Microscope
Size (Diameter)	Microglass beads in size between 0 and 800 µm  Glass beads Type S in size between 0,25 – 4,40 mm (see table Standard Sizes)
Transformation temperature	549 °C
Softening point (Littleton point)	734 °C
Melting point	1.446 °C
Specific thermal Conductivity	1,129 W/km
Coefficient of expansion	9,05 106 (1/K) [20-400 °C]
Specific thermal capatcity	1,329 kJ/kg K [>600 °C]
Youngs-Module	63 GPa
Hardness according to Mohs	≥ 6
Abraison after 9 h grinding	23,85 Weight.-%  (Test conditions: DRAIS laboratory mill PML H/V, Speed 13,4 m/s, Filling grade 70 Vol.%; Milling suspension: 4 kg Water, 1 kg Titandioxide, Beads: Art. 4505, 1,25 - 1,65 mm Ǿ)
Storage indication	Store in a dry manner in closed (original) container by room temperature. We recommend storage life of maximum 3 years.
Disposal	There is no type of waste that occurs due to the product that requires special supervision according to the German “Closed Substance Waste Management Act” or the 91/689/EWG and 2006/12/EG guidelines.
Safety advice	High risk of slipping due to spillage of product