Alumina Ceramic Rod Product
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Specifications
alumina ceramic parts
1.Material: High purity alumina
2.Processed by cold-pressing
3.QA,rush delivery
4.MOQ:500pcs
Name | Unit | Alumina | Zirconia | ||
Content | % | ≥95 | ≥99 | ≥99.7 | ≥94 |
Density | g/cm3 | 3.60 | 3.90 | 3.90 | 6.00 |
Hardness (Hv0.5) | GPa | 13.1 | 15.0 | 17.1 | 13.2 |
flexural strength
| MPa≥ | 340 | 310 | 370 | 1000 |
Elasticity | GPa | 300 | 330 | 350 | 200 |
Poisson's ratio
|
| 0.23 | 0.23 | 0.23 | 0.30 |
Max Tem. | °C≥ | 1400 | 1750 | 1800 | 1050 |
Heat expansion | ×10-6/°C(40-800°C) | 7.8 | 8.0 | 8.0 | 11.0 |
Thermo conductivity
| W/m·K( 20°C) | 22 | 28 | 31 | 2.6 |
Thermal Resistance | °C | 200 | 200 | 230 | 300 |
dielectric strength
| V/m | 15×106 | 15×106 | 15×106 | 11×106 |
dielectric phase angle (1MHz) | ×10-4 | 4 | 2 | 1 | 16 |
SIC(1MHz) |
| 9.2 | 9.8 | 9.9 | 33 |
Nitric Acid (60%)90°C | WT Loss mg/cm2/day≤ | 0.12 | 0.10 | 0.05 | ≠0 |
Sodium hudroxide (30%)80°C | WT Loss mg/cm2/day≤ | 0.53 | 0.26 | 0.04 | 0.08 |
- Q:Principle of chemical engineering drum vacuum filter, the faster the speed, the less the amount of filtrate obtained per turn, the more the amount of filtrate obtained per unit time?
- The faster the speed is, the shorter the time required for each turn, i.e., the shorter the filtration time, the less the filtrate will be
- Q:Ceramic filter capacity.
- 60 square meters of ceramic filter power 35kW or so, a high degree of automation, each class can complete the operation.
- Q:What about the leakage of the ceramic filter static and dynamic sealing points?
- When the ceramic filter works, the operation may be as follows: 1. The feed is injected and the pulp is injected into the tank of the ceramic filter. 2, mixing system, ceramic filter stirring rake back and forth mixing, driven by mixing reducer. 3, spindle rotation, material level reached a certain range, through the spindle speed machine to drive the ceramic filter disk rotation.
- Q:How many degrees does the ceramic filter melt?
- Alumina made from tabular corundum can be used over 1800 degrees!SiC if there is atmosphere, protection will be higher, there is no atmosphere protection, because the existence of oxidation, generally not more than 1600.Corundum, mullite, 1750 degrees small meaning.
- Q:Influence factors of ceramic filter
- (1) the particle size and the distribution of the material match the microporous of the ceramic filter plate. Although the ceramic filter plate aperture is bigger, easy to suck the pulp, but easy to cause the ceramic filter board to block up.(2) the ceramic filter plate with the same ceramic filter plate with high pore permeability and high water permeability is selected with high water permeability and good slurry absorption performance. The spindle speed is slow, the formation time of growth in the area of vacuum filter cake, production capacity increased gradually, but because the unit time of grout thickness and spindle speed slow is proportional to, so the ceramic filter capacity in a range of showing the highest.
- Q:Beneficiation ceramic filter no problem, the technical parameters are normal, but filter out the concentrate water suddenly excessive, what is the reason?
- First, the fineness of the material, resulting in the filter board filter cake moistureTwo, the vacuum can not reach, in the circumstances, whether the vacuum pipe leak
- Q:What's the acid of the ceramic filter plate?
- General ceramic filter running for eight hours or so, you need to stop for joint cleaning, general cleaning at an hour or so. When washing together, there is acid washing, usually concentrated nitric acid. The purpose is to dissolve the pores in the ceramic filter plate through nitric acid.
- Q:The use of water glass as beneficiation agent, copper concentrate in the ceramic filter can not filter, how to do?
- Water glass is a kind of adhesive of flotation reagent, after use may cause the pulp viscosity increased, leading to the adsorption resistance of slurry becomes large, when using ceramic filter filtration dewatering, vacuum suction surface of the microporous ceramic filter plate is smaller than the resistance, there may be a suction effect or even not suction. Some flocculant agents can lead to this phenomenon.
- Q:Microporous ceramic filter plate cleaning
- For the use of a long time, the method 1, the effect is still no significant improvement, that is how to plug the ceramic filter plate regeneration? The ceramic filter plate with uneven or non sucking slurry can be removed, and oxalic acid or other acid liquid with certain concentration and certain temperature can be taken together to dredge the microporous of the ceramic filter plate. (do not recommend sulphuric acid)
- Q:Common troubles of ceramic filter
- The metering pump is not working properly and backwash water into the bucket of acid. The main reason is that the metering pump is not switched on, the diaphragm is worn out, the frequency is too low, and the check valve of the acid pipe and backwash pipe is worn out.
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