Basic Info.
Usage
Chemical, Grind, Refractory Material
Processing Type
Rolling Type
Specific Density
>3.65g/Cm
Application
Grinding Media
Product Name
Alumina Ball
Payment Term
T/T, L/C, Paypal, West Union etc
Thermal Conductivity
3W/M.K
Static Water Absorbent
17~25%
Package
25kg/Paper Bag, 700kg/Super Sack, 150kg/Steel Drum
Transport Package
Drum, Bag
Product Description
Company Profie
Guangdong Chaozhou Fengye Industrial Co.,Ltd
Chaozhou Fengye Zirconium New Materials Co., Ltd
A professional research and development production of zirconia products and aluminum products high-tech enterprises, covering 60,000 square meters, with intelligent multi-functional production plant 28,000 square meters; 700 square meters and 10,000 square meters R & D test center garden-style staff living quarters, is capable of independently produced powder, molding and sintering the fine processing of all production processes of large-scale manufacturers.
The company introduced isostatic pressing, flow Festival, gels, injections, grouting and other advanced molding equipment, using patented technology to produce high-performance structural ceramic products for its high hardness, high temperature, wear
resistance, corrosion resistance, electrical insulation, non-magnetic, light weight and metal incomparable superiority, widely used in aerospace, nuclear industry, petroleum, chemical, textile, food, medical equipment, machinery and other fields.
Product DescriptionThe FENGYE High Alumina Support Media is equal 99 Support Media. It is inchemical composition99+% alpha alumina and a maximum 0.2wt% SiO 2 . Because of its high alumina content and low silica (SiO2 ), it's a very excellent and ideal product for high temperature and steam applications, such as secondary reformers in ammonia processing, where leached silica will coat downstream equipment or foul the catalyst bed.
The FENGYE High Alumina Support Media has very excellent thermal properties, with its high density high-temperature resistance 1550ºC, also it's a good choice for heat retention or equilibration media.
For its superior chemical resistance, it's suitable for applications in olefin processes, such as ethylene dryers, where there's the polymerization problem.
Physical properties
Model: | FENGYE 99% |
Color: | White |
Shape: | Ball |
Typical Technical Composition | Min. % | Min. % | Max. % | Usual % |
SiO2 | ****** | ****** | 0.2 | 0.18 |
Al2O3 | 99 | 99 | 99.6 | 99.3 |
Fe2O3 | ****** | ****** | 0.2 | 0.02 |
TiO2 | ****** | ****** | 0.55 | 0.02 |
CaO | ****** | ****** | 0.1 | 0.2 |
MgO | ****** | ****** | 0.1 | 0.05 |
Na2O | ****** | ****** | 0.25 | 0.1 |
K2O | ****** | ****** | 0.2 | 0.13 |
|
Physical properties |
Index | Value | Value |
Leachable Iron | ≤ 0.01% | |
Apparent Porosity by Weight | ≤ 7.0% | |
Moh's Hardness Scale | >8.0 | |
Water Absorption | <4.0 wt.% | |
Acid Resistance | >99.8% | |
Thermal Conductivity | 0.7-0.8 w/m2.k | |
Thermal Expansion @ 500 | 0.10% | |
Thermal Shock Stability, 1000 then water cooling | 10 times | |
Max. Operating Temperature | 1550°C | 2822 |
Specific Density | 3400 kg/m3 | 212 lb/ft3 |
Bulk Density (Packing Density) | 2100 kg/m3 | 131 lb/ft3 |
How to optimize the grinding process in Ball Mill for Alumina Ball:
1. In the situation of wet grinding
Usually,the total charges of the alumina balls in one ball mill should be not less than 55% of the total ball mill capacity.
Empirical formula of charged alumina ball quantity into ball mill:
M=3.14xR2xDxLx25%+1000
Remark M= charged alumina ball quantity(kg)
D=Alumina ball density(g/cm)
R=Radius of ball mill L=Ball Mill Length
Alumina grinding ball proportion:
For a bright new installed ball mill, the alumina balls proportion depends on the capacity of the ball mill and the fineness of
the grinding raw materials
Alumina ball recharge quantity
Recharge quantity=Primary ball quantity*Ball wear loss*Grinding time
2. In the situation of dry grinding:
Dry grinding is widely used in mining, ceramics industries, we developed alumina balls performed well on dry grinding
situation with much lower wear-loss, it helps solve the problem of materials contamination.
The proportion of the alumina ball for dry grinding depends on the hardness and fineness of the grinding raw material,
generally speaking, CIP formed grinding ball used for dry grinding.
Wear-loss testing method of alumina ball:
This method is the Chinese domestic testing method, put alumina ball samples into polyurethane jar, testing the wear loss in the unit time.
Firstly, put 4kg alumina ball and 4L water into the grinding jar, put the jar into the testing machine, grinding 2h on the
revolution of 80 r/min. Take out the samples dry them and get weight M1.
Secondly, put the above samples again into the jar, add 4L water, grinding 24h on the same revolution of 80 r/min.
Thirdly, take out the samples dry and get weight M2.
Fourthly, testing the average diameter of the samples, get average diameter D.
Fifthly, wearloss calculation:
EWT(%o )=KD M 1-M2 )M 1
Empirical formula: EWT(%o)= (M1-M2)M1/24 /100*1000*D
Product Description
Ceramic packing balls also named inert alumina balls are manufactured from very high quality chemical-porcelain clay materials.
According to the different content of Al2O3,the packing ceramic ball is divided into: common ceramic ball, inert ceramic ball,
medium alumina ball, high alumina ball and 99% alumina Ball, actived alumina ceramic ball, opening hole ceramic ball, micro porous ceramic ball, heat storage ceramic ball.
Packing & Delivery
25kg/bag, 1T/Pallet.
Application
In the petrochemical and fertilizer industries, it is widely used as a catalyst and catalyst carrier. Modern water-purifying
activated alumina has adsorption characteristics and is therefore used as a desiccant for gases and liquids, as an adsorbent for gas purification, as a deionizing agent for drinking water, as a color and odor eliminating agent for industrial sewage.
It can be used together with household fluorine removal cylinders, and is an ideal drinking water defluoridation device in the family. The defluorination filter material can also be used together with the fluorine removal device of the water plant or the fluorine removal device for industrial use. Activation of fluorine removal filter for household fluorine removal equipment: dispose of aluminum sulfate solution (3 liters of water, 0.3 kg of solid aluminum sulfate), put alumina (AL2P3) defluoridation filter into the above solution, soak for 5-10 hours to discard The liquid (should be properly stirred during soaking), and then washed 3-5 times with water, each time with water about 2 liters, or regenerated by pH adjustment, the pH is controlled at 7.5. Activated alumina defluorination filter can be used continuously for 6-8 years. When the surface appears yellowish brown, the effect of removing fluorine is obviously reduced. This is caused by impurity pollution in the water. Therefore, it is best to treat it once every half a year with 3% dilute hydrochloric acid. The method of operation is the same as the regeneration method.
Physical properties
Moreover, it is required that the dissolution rate of alumina in the cryolite melt is fast, the bottom of the electrolytic cell
tank is deep and deep; the heat insulation of the shell on the electrolyte is good; the moisture is not absorbed in the air, the
flying loss is small, the fluidity is good, and the transportation is convenient. And to facilitate the automatic feeding of the
electrolytic cell. All of these properties depend on the physical properties of the alumina.
The indicators used to characterize the physical properties of alumina are: angle of repose, α-Al203 content, bulk density,
particle size and specific surface area, and wear coefficient.
Use and properties of alumina balls
1. The angle of repose. The alumina angle of repose refers to the inclination of the material naturally accumulating on a smooth plane. The alumina with a larger repose angle is more soluble in the electrolyte, and can be well covered on the electrolyte crust during the electrolysis process, and the flying loss is also small.
2. A-Al2O3 content. The content of a-Al2O3 in alumina reflects the degree of alumina roasting. The higher the degree of
calcination, the more a-Al2O3 content, the hygroscopicity of alumina decreases with the increase of a-Al2O3 content.
Therefore, alumina for electrolysis is required to contain a certain amount of a-Al2O3. However, the solubility of a-Al2O3 in the electrolyte is inferior to that of Υ-Al203.
3, the weight. The bulk density of alumina refers to the weight of a unit volume of material in a natural state. Aluminium, which generally has a small bulk density, facilitates dissolution in the electrolyte.
4. Particle size. The particle size of alumina refers to the degree of its thickness. The particle size of alumina must be
appropriate, too coarse in the electrolyte to dissolve slowly, or even precipitate; the rules are easy to fly loss.
5. Specific surface area. The specific surface area of alumina refers to the total surface area of the sum of the outer surface area per unit weight of the material and the surface area of the inner pores. It is an important indicator of the level of material activity. Alumina having a large specific surface area has good solubility in an electrolyte and is active, but is
hygroscopic.
6, wear coefficient. The so-called wear coefficient is the percentage change of the fractional content in the sample after the alumina is rubbed in a fluidized bed under controlled conditions. The wear coefficient is a physical indicator of the strength of alumina.
According to the physical properties of alumina, alumina can usually be divided into three types: sand, flour and intermediate. These three types of alumina have large differences in physical properties. The sand-like alumina has a small bulk density, a large specific surface area, a slightly smaller angle of repose, and a smaller amount of a-Al2O3, and the coarse particles are more and more uniform, and the strength is higher. Flour-like alumina has a large bulk density, a small specific surface area, contains a large amount of a-Al2O3, more fine particles, and poor strength. The physical properties of the intermediate alumina are somewhere in between.
Address:
Yinhuai North Road, Chaozhou, Guangdong, China
Business Type:
Trading Company
Business Range:
Arts & Crafts, Auto, Motorcycle Parts & Accessories, Bags, Cases & Boxes, Industrial Equipment & Components, Manufacturing & Processing Machinery
Management System Certification:
ISO 9001
Company Introduction:
Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of "quality first, customer first and credit-based" since the establishment of the company and always do our best to satisfy potential needs of our customers. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force.
Chaozhou Fengye Zirconium New Materials Co., Ltd
A professional research and development production of zirconia products high-tech enterprises, covering 60, 000 square meters, with intelligent multi-functional production plant 28, 000 square meters; 700 square meters and 10, 000 square meters R & D test center garden-style staff living quarters, is capable of independently produced powder, molding and sintering the fine processing of all production processes of large-scale manufacturers.
The company introduced isostatic pressing, flow Festival, gels, injections, grouting and other advanced molding equipment, using patented technology to produce high-performance structural ceramic products for its high hardness, high temperature, wear resistance, corrosion resistance, electrical insulation, non-magnetic, light weight and metal incomparable superiority, widely used in aerospace, nuclear industry, petroleum, chemical, textile, food, medical equipment, machinery and other fields.