Molecular Sieve 4A with Good Quality
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 1 Ton m.t.
- Supply Capability:
- 5000 Tons per Month m.t./month
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Molecular Sieve 4A
Molecular sieve 4A is an alkali alumino silicate;it is the sodium form of the Type A crystal strcture.4A molecular sieve has an effective pore opening of about 4 angstroms(0.4nm).Our 4A molecular sieve will adsorb most molecules with a kinetic diameter of less than 4 angstroms and exclude those larger.Such adsorbable molecules include simple gas molecules such as oxygen,nitrogen,carbon dioxyde and straight chain hydrocarbons.Branched chain hydrocarbons and aromatics are excluded.
Molecular Formula
Na2O Al2O3 2.0 SiO2 4.5 H2O
Specification And Application
Specification | |||||
Item |
Unit |
Technical data | |||
Shape |
|
Pellet |
Sphere | ||
Diameter |
mm |
1.5-1.7 |
3.0-3.3 |
1.7-2.5 |
3.0-5.0 |
Size Ratio Up To Grade |
% |
≥98 |
≥98 |
≥96 |
≥96 |
Bulk Density |
g/ml |
≥0.66 |
≥0.66 |
≥0.66 |
≥0.66 |
Wear Ratio |
% |
≤0.20 |
≤0.40 |
≤0.20 |
≤0.20 |
Crushing Strength |
N |
≥30/cm |
≥45/cm |
≥30/p |
≥70/p |
Static Water Adsorption |
% |
≥20.5 |
≥20.5 |
≥21 |
≥21 |
Ethylene Adsorption |
% |
≤3.0 |
≤3.0 |
≤3.0 |
≤3.0 |
Water Content, As Shipped |
% |
≤1.5 |
≤1.5 |
≤1.5 |
≤1.5 |
Application | |||||
Drying and removing of CO2 from natural gas, LPG, air,inert and athmospheric gases, etc. | |||||
Removal of hydrocarbons, ammonia and methanol from gas streams (ammonia syn gas treating). | |||||
Special types are used in the air break units of buses, trucks and locomotives. | |||||
Packed in small bags, it may be used simply as a packaging desiccant. | |||||
Attention | |||||
To avoid damp and pre-adsorption of organic before running, or must to be reactivated. | |||||
- Q: It's used for gluing walls for architectural models. What are alternatives for it?
- *Plastic Cement (also known as Poly-Cement) works by melting a plastic surface into another plastic surface, thereby joining them together with a powerful bond. This means it doesn't normally work on metal, but it can be adapted to do so. Refer Standard:ASTM C 1328
- Q: I have tile borders that have been used as a design form between 2 set of tiles unfortunately the person performing the tiling bit has applied direct cement onto it and has caused it to harden and set. Now the cement is hard to scrape off since the border has designs grooved on it and is also covered with grout colour. Can anyone please help me out and tell me how to remove grout colour and cement from it.
- Warm water with white vinegar in it, the vinegar disolves the cement, use a light scourer as well to apply and scrub off
- Q: ok im thinking of remodeling and there is a hideous cement floor, i want a carpet...How do i do it? thank you
- two ways to do this job ....... glue down carpet ( direct glue down application ) basically cut the carpet to size roll it up and apply adhesive to the concrete and roll it out . or the tack less method,,, apply tack less ( concrete grade small strips of wood with nasty spikes sticking up aproc 1/4 inch ) to all edges of area ...walls doorways etc .then cut carpet approx 6 inches larger than the actual dimension. push into place with a carpet stretcher . then trimmed... after its tight .
- Q: and also does the cement have an affect on the water quality, such as ph, hardness...etc?and also if i do build it out of cement, do i still have to put down a pond liner?and also does anyone have any advice, or info on building a pond out of cement?THANK YOU
- Cement-by which I presume you mean concrete, is fine for building a pond. It Will have an effect on the ph of the water. Cement is alkaline so the lime content would be very harmful to fish and aquatic life in the short term. Eventually it would become neutral but you would need to waterproof it with something anyrate which would keep the water away from contact with the cement. You can use bitumen which you paint on or a sheet of strong plastic is often enough.. Dig out the shape you want first and then shovel the concrete into it but if the sides are steep then you will have to make the concrete very dry to prevent the concrete running back into the bottom. You can always then give a thin coat of wetter cement to the sides later if you prefer
- Q: I have a small nick on my tire, and just a small piece of rubber is hanging out. There is no air coming out and the cords or anything is not showing, don't be alarmed. I've driven around with this car and nothing has happened. It just cut the top portion of the tire, not so deep where any major damage is visible. I'm afraid to just rip the little piece off. Can I use rubber cement glue to glue the little piece back together?Once again, there is no major damage to the tire. No air coming out or cords showing. Just a slight tear.
- You can, but rubber cement glue wasn't made for that purpose. You're only using it for cosmetic reasons, so it'll be ok. However I would like to say that because there's no major damage to the tire that everything is safe. If it's a very small nick ( less tha 1/4 in in length) I'd say your ok. But if it's larger than that, i'd say to take it to a mechanic. Tires don't bear the same weight load all the time while driving, so going around corners, making small turns on a highway all increase the pressure that's on a tire. Check with a mechanic to be sure and stay safe.
- Q: I spent ?800 on this and am really worried that this is wasted (the use by date on the paper wrapping is october 2008. I have opened one of the bags and there is still powder in it however there are hard bits. Is there anything i can now do with this cement? The builders start mid may. thanks
- BOB has it in one. It has gone-off with the natural moisture in the air, a builder would not even consider using it, as it is now useless.
- Q: What are the disadvantages of using Cement near lakes???Please can you give as much detail as possible.
- Although I do not see disadvantages of using cement near lakes, because so far all dams, bridges , pillars and jetties are from concrete, unless you have some thing specific you want an answer for, please elaborate
- Q: i was just wondering, i also wasn't quite sure how to figure out how many pounds of force would be required.
- I don't know , but it is not as hard as it looks. You need stable mounts and very good technique. The stones I use are patio pavers, 2x8x16. Stack two to get your specific dimension. Concrete is quite brittle, so a good, sharp strike will crack it. Because wood flexes, I find it easier to break two patio stones, than five boards.
- Q: why has the price of portland cement increased from 2007 to now?
- The national debt went up 10 trillion dollars , inflation went up making our money worth less , needing more money to be printing to keep up with higher cost
- Q: We had a friend of my husbands put the cement on the stairs and it looks awful. He insists it only needs one more coat of concrete. I think we should have built frames and poured in the concrete. The concrete is chipping on the edges of the stairs. Help please.
- no special cement is available for stairs as far as i know...
1. Manufacturer Overview
| Location | Rizhao, Shandong, China (Mainland) |
| Year Established | 2004 |
| Annual Output Value | US$5 Million - US$10 Million |
| Main Markets | North America; South America; Southeast Asia; Africa; Mid East |
| Company Certifications | Certificate of Quality; certificate for products exemption from quality surveillance inspecction; ISO9001 Certificate |
2. Manufacturer Certificates
| a) Certification Name | |
| Range | |
| Reference | |
| Validity Period |
3. Manufacturer Capability
| a) Trade Capacity | |
| Nearest Port | Rizhao port |
| Export Percentage | 91% - 100% |
| No.of Employees in Trade Department | 3-5 People |
| Language Spoken: | English, Chinese, French, Russian |
| b) Factory Information | |
| Factory Size: | 3,000-5,000 square meters |
| No. of Production Lines | 3 |
| Contract Manufacturing | OEM Service Offered Design Service Offered Buyer Label Offered |
| Product Price Range | Average |
Send your message to us
Molecular Sieve 4A with Good Quality
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 1 Ton m.t.
- Supply Capability:
- 5000 Tons per Month m.t./month
OKorder Service Pledge
OKorder Financial Service
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