Refractory castable should be selected according to the actual situation, different structure, pouring method is also different.Choosing reasonable construction method is the key to ensure the quality, time limit and reduce the cost.So what preparation should be done before refractory castable construction?
1) The matching test block should be well done, and construction can only be carried out when the test block meets the design requirements;
2) Check the corrosion of steel shell, and the steel plate shell surface contacted by castable shall be derusted;
3) Check whether the formwork is firmly supported. The surface of the formwork should be planed and painted with a layer of varnish to prevent the formwork from absorbing water and facilitate mold removal.Formwork joints should be tight and strong enough.