At present, wear-resistant coatings on the market are often used in the steel industry. The fluidized bed boiler often needs to repair because serious friction will be caused by fluidization of internal coal particles. It is very difficult to repair when the fluidized bed boiler is worn. The fluidized bed boiler should be dismantled when it is seriously worn, which is not only costly, but also takes a long time. In addition, a lot of waste will be caused, which will pollute the environment. Smearing coating on the worn part can save cost and time and protect the environment. In addition, some unnecessary troubles can be avoided in the construction.
Content of this product:
This product is a wear-resistant coating. It can be used to repair worn parts of the boiler, which can save time, labor and cost.
Another technical problem it resolves is that it provides a production method of a wear-resistant coating. The wear-resistant coating produced by this method can be stored for a long time, save resources and reduce working time. During the construction, add appropriate amount of quick-setting agent and this product can be used.
The technical solution of this product is:
The wear-resistant coating is characterized in that it contains the following part by weight raw materials: 1~10 part by weight of chrome green, 20~50 part by weight of corundum, 10~20 part by weight of mullite, 5~20 part by weight of aluminium oxide, 5~10 part by weight of silica, 10~20 part by weight of clay, 0.5~2 part by weight of fiber, 10~20 part by weight of aluminum phosphate solution and 5~10 part by weight of humectant. The aluminum phosphate solution in the present invention is fried from phosphoric acid and aluminium oxide. The humectant in the present invention includes NH-66 refractory phosphoric acid inhibitors, oxalic acid and marshmallow, of which the mass ratio of of each component is m (NH-66 refractory phosphoric acid inhibitor) : m (oxalic acid) : m (marshmallow) = 1~5:1~5:1~5. The fiber in the present invention is an explosion-proof fiber.
The production method of the wear-resistant coating is characterized in the following steps:
(1) Respectively weigh phosphoric acid and alumina, fry them into aluminum phosphate solution and reserve it for standby;
(2) Respectively take chrome green, corundum, mullite, aluminium oxide, silica, clay, fiber, aluminum phosphate solution and humectant (NH-66 refractory phosphoric acid inhibitors, oxalic acid and marshmallow) according to the above-mentioned ratio;
(3) Mix chrome green, corundum, mullite, aluminium oxide, silica, clay and fiber evenly;
(4) Add the weighed aluminum phosphate solution and humectant (NH-66 refractory phosphoric acid inhibitors, oxalic acid and marshmallow) and the mixture made in step (3) into the mixer, mix well and the wear-resistant coating is made.
The wear-resistant coating produced by this patent can be stored for a long time, save resources and reduce construction time. During the construction, add appropriate amount of quick-setting agent and this product can be used. This wear-resistant coating is mainly used to repair the worn parts of the boiler, which can splice the old and new refractory. Professionals are not necessary during the construction, and so it is very convenient for users.