|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

LIGHTING AND HEATING

|  | F23 |
COMBUSTION APPARATUS; COMBUSTION PROCESSES

|  | F23 |
Note(s) In this class, the following terms are used with the meanings indicated: "Combustion" means the direct combination of oxygen gas, e.g. in air, and a burnable substance. Any other heat-producing combination of chemical substances, e.g. hydrogen peroxide and methane, iron oxide and aluminium, is provided for in Section C or in sub-class Fulltext... Hierarchy... Expanded...F24J. "Combustion chamber" means a chamber in which fuel is burned to establish a self-supporting fire or flame and which surrounds that fire or flame. "Burner" means a device by which fluent fuel is passed to a combustion space where it burns to produce a self-supporting flame. "Air" means a mixture of gases containing free oxygen and able to promote or support combustion.

|  | F23K |
FEEDING FUEL TO COMBUSTION APPARATUS

|  | F23K 1/00 |
Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus (filtration Fulltext... Hierarchy... Expanded...B01D; mixing Fulltext... Hierarchy... Expanded...B01F; pulverising Fulltext... Hierarchy... Expanded...B02C; drying Fulltext... Hierarchy... Expanded...F26B)

|  | F23K 1/02 |
· | Mixing solid fuel with a liquid, e.g. preparing slurries

|  | F23K 1/04 |
· | Heating fuel prior to delivery to combustion apparatus

|  | F23K 3/00 |
Feeding or distributing of lump or pulverulent fuel to combustion apparatus (conveying in general Fulltext... Hierarchy... Expanded...B65G)

|  | F23K 3/02 |
· | Pneumatic feeding arrangements, i.e. by air blast

|  | F23K 3/04 |
· | for locomotive boiler furnaces

|  | F23K 3/06 |
· | for shaft-type furnaces

|  | F23K 3/08 |
· | for furnaces having movable grate bars

|  | F23K 3/10 |
· | Under-feed arrangements

|  | F23K 3/12 |
· · | feeding by piston

|  | F23K 3/14 |
· · | feeding by screw

|  | F23K 3/16 |
· | Over-feed arrangements

|  | F23K 3/18 |
· · | Spreader stokers

|  | F23K 3/20 |
· · · | with moving hoppers

|  | F23K 3/22 |
· | Controlling thickness of fuel bed

|  | F23K 5/00 |
Feeding other fuel to combustion apparatus