Coal combustion products recovery process

A process for recovering coal combustion products and reusing the coal combustion products, the process comprising:

• (a) identifying a disposal site that contains coal combustion products;
• (b) removing at least a portion of the coal combustion products from the disposal site;
• (c) introducing the portion of the coal combustion products along with pulverized coal into a pulverized coal fired furnace;
• and
• (d) burning the portion of the coal combustion products in the furnace with the pulverized coal, and
• separating the portion of coal combustion products from materials other than coal combustion products after step (b) and before step (c).

A process for recovering coal combustion products and reusing the coal combustion products, the process comprising:

• (a) identifying a disposal site that contains coal combustion products;
• (b) removing at least a portion of the coal combustion products from the disposal site;
• (c) introducing the portion of the coal combustion products along with pulverized coal into a pulverized coal fired furnace;
• (d) burning the portion of the coal combustion products in the furnace with the pulverized coal, and
• analyzing a sample of the portion of the coal combustion products to determine the loss on ignition of the portion of the coal combustion products after step (b) and before step (c),
• wherein the portion of the coal combustion products is introduced along with pulverized coal into the pulverized coal fired furnace if the portion of the coal combustion products has a loss on ignition greater than or equal to a predetermined loss on ignition value, and
• wherein the predetermined loss on ignition value is 1%.

A process for recovering coal combustion products and reusing the coal combustion products, the process comprising:

• (a) identifying a disposal site that contains coal combustion products;
• (b) removing at least a portion of the coal combustion products from the disposal site;
• (c) analyzing a sample of the portion of the coal combustion products to determine the loss on ignition of the portion of the coal combustion products;
• (d) adding the portion of the coal combustion products to a supply of coal to create a recovered coal combustion products and coal mixture if the portion of the coal combustion products has a loss on ignition greater than or equal to a predetermined loss on ignition value;
• (e) pulverizing the recovered coal combustion products and coal mixture to produce a pulverized mixture;
• (f) introducing the pulverized mixture into a pulverized coal fired furnace;
• and
• (g) burning the pulverized mixture in the furnace,
• wherein the predetermined loss on ignition value is 1%.

A process for recovering coal combustion products and reusing the coal combustion products, the process comprising:

• (a) identifying a disposal site that contains coal combustion products;
• (b) removing at least a portion of the coal combustion products from the disposal site;
• (c) analyzing a sample of the portion of the coal combustion products to determine the loss on ignition of the portion of the coal combustion products;
• (d) adding the portion of the coal combustion products to a supply of coal to create a recovered coal combustion products and coal mixture if the portion of the coal combustion products has a loss on ignition greater than or equal to a predetermined loss on ignition value;
• (e) pulverizing the recovered coal combustion products and coal mixture to produce a pulverized mixture;
• (f) introducing the pulverized mixture into a pulverized coal fired furnace;
• and
• (g) burning the pulverized mixture in the furnace,
• wherein a fly ash having a loss on ignition of less than about 3% is produced by the process.

A process for recovering coal combustion products and reusing the coal combustion products, the process comprising:

• (a) identifying a disposal site that contains coal combustion products;
• (b) removing at least a portion of the coal combustion products from the disposal site;
• (c) analyzing a sample of the portion of the coal combustion products to determine the loss on ignition of the portion of the coal combustion products;
• (d) adding the portion of the coal combustion products to a supply of coal to create a recovered coal combustion products and coal mixture if the portion of the coal combustion products has a loss on ignition greater than or equal to a predetermined loss on ignition value;
• (e) pulverizing the recovered coal combustion products and coal mixture to produce a pulverized mixture;
• (f) introducing the pulverized mixture into a pulverized coal fired furnace;
• (g) burning the pulverized mixture in the furnace, and
• separating the portion of coal combustion products from materials other than coal combustion products after step (b) and before step (c).

A process for recovering coal combustion products and reusing the coal combustion products, the process comprising:

• (a) identifying a disposal site that contains coal combustion products;
• (b) removing at least a portion of the coal combustion products from the disposal site;
• (c) analyzing a sample of the portion of the coal combustion products to determine the loss on ignition of the portion of the coal combustion products;
• (d) if the portion of the coal combustion products has a loss on ignition greater than 1% adding the portion of the coal combustion products to a supply of subbituminous coal that generates an ash having a loss on ignition less than 5% upon burning to create a recovered coal combustion products and coal mixture;
• (e) pulverizing the recovered coal combustion products and coal mixture to produce a pulverized mixture;
• (f) introducing the pulverized mixture into a pulverized coal fired furnace;
• and
• (g) burning the pulverized mixture in the furnace,
• whereby a fly ash having a loss on ignition of less than about 3% is produced.

A process for recovering coal combustion products and reusing the coal combustion products, the process comprising:

• (a) identifying a disposal site that contains coal combustion products;
• (b) removing at least a portion of the coal combustion products from the disposal site;
• (c) analyzing a sample of the portion of the coal combustion products to determine the loss on ignition of the portion of the coal combustion products;
• (d) if the portion of the coal combustion products has a loss on ignition greater than 1%, adding the portion of the coal combustion products to a supply of coal that generates an ash having a loss on ignition less than 5% upon burning to create a recovered coal combustion products and coal mixture;
• (e) pulverizing the recovered coal combustion products and coal mixture to produce a pulverized mixture;
• (f) introducing the pulverized mixture into a pulverized coal fired furnace;
• and
• (g) burning the pulverized mixture in the furnace, whereby a fly ash having a loss on ignition of less than about 3% is produced.

A process for recovering coal combustion products and reusing the coal combustion products, the process comprising:

• (a) identifying a disposal site that contains coal combustion products;
• (b) removing at least a portion of the coal combustion products from the disposal site;
• (c) introducing the portion of the coal combustion products along with pulverized coal into a pulverized coal fired furnace;
• and
• (d) burning the portion of the coal combustion products in the furnace with the pulverized coal,
• wherein step (c) comprises:
• separating the portion of the coal combustion products into a first lot of the coal combustion products and a second lot of the coal combustion products, the first lot having particle sizes greater than the second lot;
• adding the first lot of the coal combustion products to a supply of coal to create a recovered coal combustion products and coal mixture;
• pulverizing the recovered coal combustion products and coal mixture to produce a pulverized mixture;
• Introducing the pulverized mixture into the pulverized coal fired furnace;
• and
• injecting the second lot of the coal combustion products into the pulverized coal fired furnace.

A process for recovering coal combustion products and reusing the coal combustion products, the process comprising:

• (a) identifying a disposal site that contains coal combustion products;
• (b) removing at least a portion of the coal combustion products from the disposal site;
• (c) introducing the portion of the coal combustion products along with pulverized coal into a pulverized coal fired furnace;
• and
• (d) burning the portion of the coal combustion products in the furnace with the pulverized coal,
• wherein step (c) comprises:
• separating the portion of the coal combustion products into a first lot of the coal combustion products and a second lot of the coal combustion products, the first lot being classified as a non-hazardous material under existing environmental regulations at the site of recovery in step (a) and the site of burning in step (d);
• and
• introducing the first lot of the coal combustion products along with pulverized coal into the pulverized coal fired furnace.