Magnesium Cement
Magnesium Cement
(OP)
Can Anyone supply info on Eco-cement aka Magnesium Cement?
I believe that this is available in Australia, but I would prefer North American Suppliers, especially manufacturers.
I am looking for any process to seperate MgO from Dolomite?
And also info on the seqesting ability of eco-cement to reduce greenhouse gas.
I believe that this is available in Australia, but I would prefer North American Suppliers, especially manufacturers.
I am looking for any process to seperate MgO from Dolomite?
And also info on the seqesting ability of eco-cement to reduce greenhouse gas.





RE: Magnesium Cement
There are virtually no U.S. cement companies, but only foreign owned cement plants in the U.S. They now may have access to that type of cement, since cement is now more international and not strictly related to market area as it was 10 or 15 years ago.
Dick
RE: Magnesium Cement
RE: Magnesium Cement
Since the recent changes in the ownership of the industry, there has been tremendous investment in updating the old technology and quality control systems and laboratories.
Eco-cement is a new wrinkle on the old magnesium cement that was not durable. The Eco-cement supposedly absorbs CO2 based on the exposed area. Since it requires magnesium carbonate instead of calcium carbonate, may not be possible to be produced in current facilities unless both materials are locally available. Because of this, the current availability may be limited.
Changes in the manufacturing processes and permitting make changes very slow to occur even if the raw materials are available and there is a market.
Dick
RE: Magnesium Cement
I work for a concrete producing division of a materials company. We really can't choose our producer for most work. Specifications for transportation projects here still call for "Dacotah" brand (used to be a state-owned plant, now owned by Grupo Cemento Chihuahua (sp?)). When you have to have that in your cement silo, you have to use it in all of the concrete you sell.
Can't complain too much about the Mexicans buying the plant, the thing wouldn't be producing anything if they hadn't put the money into improvements that the state had been neglecting.
RE: Magnesium Cement
RE: Magnesium Cement
You are right about normal concrete made with Portland cement absorbing CO2. The carbonation process occurs when you have available CO2, some moisture and a reasonable temperature, since it is a chemical reaction. The combination of the CO2 with the free cement materials(mainly CaO) does contibute to strength is a small way.
The process is slow since the CO2 must be absorbed into the depths of the concrete. The stronger and more dense the concrete, the longer this "novelty" process continues.
The claim to fame for the new Magnesium cement is that it occurs faster.
In any case, it is any extremely long term process that uses some CO2.
Dick
RE: Magnesium Cement