Chemical binder for coating payload in open top hopper cars, trucks, piles, and similar storage/shipping containers
The invention is directed towards methods and compositions for treating piles of particulate materials to inhibit and prevent the loss of valuable fuel or mineral dust from being released from storage piles or open containers. The method involves applying to the pile a binder coating containing VAE and crude glycerin. The binder coating cures and hardens slowly so it is able to remain flexible while the pile or payload is still settling, jostling, being bumped, and otherwise moving around. This coating is especially effective for coal piles and also for piles within and for being moved by open topped railroad cars. The coating's flexibility prevents the coating from becoming brittle and shattering. The coating has better performance than its ingredients do alone. The coating is effective both when it is flexible and after it cures. As a result the invention can both prevent unwanted dust pollution as well as save its users money by avoiding loss of blown away material.
1. A method of inhibiting the release of dust from a pile of particulate material, the method comprising the step of applying to the exposed surface of the pile a binder composition, the binder composition comprising VAE and crude glycerin in a ratio of between 90:10 and 10:90.
2. The method of claim 1 wherein the composition further comprises water but does not pass significant amounts of water to the pile.
3. The method of claim 1 wherein the cure rate of the composition is slowed to allow settling of the pile.
4. The method of claim 1 wherein the pile is within an open topped container.
5. The method of claim 1 wherein the pile is within an open topped railroad car and the railroad car moves at least a part of the time.
6. The method of claim 1 wherein the particulate material is coal.
7. The method of claim 1 wherein the particulate material is slurry.
8. The method of claim 1 wherein the particulate material is applied as the pile is being formed by a dumping process.
9. The method of claim 1 wherein the dust would result from sodium carbonate being released by the pile.
10. The method of claim 1 wherein the particulate material is Red Mud.
11. The method of claim 1 wherein the pile is within a ship's hold.