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  1. lattar

    Ti-Oxide Growth Rate

    One point: as titanium is so called reactive metal it can start to burn temperatures around 500 C. This temperature is greatly depend of size and shape of titanium object.
  2. lattar

    Chlorine dioxide in beverage water treatment

    Some oxidative disinfection chemicals may effect to sealing materials at high temperatures and acidic environments. Practical experience: http://www.birkocorp.com/brewing/yeast.asp http://www.beer-brewing.com/apex/about_this_title/index/beer_brewing_c.htm www.idiclo2.com
  3. lattar

    chemical solution to remove Cr or Cr2O3 on silicon wafer surface

    I would try some oxidizing solution like hypochlorite or hydrogen peroxide to oxidate chromium to soluble chromium(VI) compounds. Hope this will inspire some new ideas for you.
  4. lattar

    Electrolytic corrosion in dissimilar metals

    If dissimilar metals are in electric contact and there is also electrolyte (in this case salt water) there is great possibility for galvanic corrosion. From galvanic series you can see how which of your metal is more nobel than other. Less noble will corrode. Galvanic series is measured in...
  5. lattar

    How to prevent solids build-up in a dryer?

    One reason for solids build-up is small particle size. Small particles have greater tendency for this kind of buil-up as surface interactions (attractive/repulsive forces) means so much.
  6. lattar

    Water / Organic separation

    At least in small scale molecular sieves (zeolites) are used to separate small amounts of water from alcohols. Regeneration of zeolites is done simply by heating. I think suitable zeolites are for example acidic zeolites. You should also consider centrifugation and membane processes as possible...
  7. lattar

    Salt bath

    I hope here is someone who can advise me. This matter is really not my expertise. We are planning a system where we are going to treat metal plates with molten caustic soda in 500 C temperature for couple of hours. Caustic melts somewhere around 400 C. Every once in a while the caustic should be...
  8. lattar

    Sampling from gas-liquid stream

    Hello I need some help. I am looking for a sampling equipment for sampling from gas-liquid stream. The relative amounts of gas and liquid in the stream may vary. Do you know any places from where to look for? Or it you know very simple system then i would be very grateful if you could wrote some...
  9. lattar

    Chromium removal

    seidelc, Thanks for the relpy. Something about our situation: Every once in a while, 1-2 times/month, there is a process fault in our plant. In this interference there happens a water leak. Water has been collected and used in the process a little by little. In the future we would like to let...
  10. lattar

    Chromium removal

    What are the most common hexavalent chromium removal methods and what kind of analysis methods are available for separating hexavalent and total chromium? I would be very grateful of all information, references and www-sites.
  11. lattar

    NaOH Getting Cold

    You wrote that it is a dosing unit. There is propably not a constant flow in pipes. So you have to also remember out-door pipe-lines. Electric heated lines can be used in this kind of situations. I have seen somekind of electric-heated clothes which can be used for heating in cold climete...
  12. lattar

    Lignosulfonate

    Lignosulfonates are surface active products. There is no exact formula for them. But roughly there is benzene rings in polymeric structure where to is bounded different kind of functional groups (HSO3-, H3CO-, -O-, -OH). There is many kinds of lingnosulfonates which differents from each other by...
  13. lattar

    ACTIVATION OF S. SILICATE WITH ALUM

    Hello, I think that they usually neutralize a dilute sodium silicate solution with dilute acidic solution to form solution which SiO2 amount is app. 1 %. Other activants than acids can also used. I don't know what are these other suitable activants. Acticated silica is usually used as coagulant...
  14. lattar

    Silica removal

    Does anyone have experience of removing silica from water or salt solutions with polyaluminium chloride (PAC) or with other flocculation process like co-precipitation it with magnesium hydroxide? Thank you for your time, Lattar

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