Conveying capacity (mining)

In mining, the conveying capacity Q is understood to be the time throughput of various conveying means .

The conveying capacity is usually given in tons per hour (t / h).

Continuous conveyor

Electricity subsidies

In the case of power conveying devices such as conveyor belts , scraper chain conveyors or pipelines, the conveying capacity depends on the speed v and the filling cross-section A of the conveying device as well as the density ρ of the conveyed material.

{\ displaystyle Q = A * v * \ rho}

Conveyor with endless traction means

In the case of conveyors with an endless traction mechanism, the volume flow is divided into smaller units, the volumes of which depend on the capacity of the individual conveying vessels . Examples of this are bucket elevators and circulating chain and cable cars. The delivery rate of this funding depends on the useful content N , the distance a and the speed v . It is calculated as follows:

{\ displaystyle Q = {\ frac {N * v} {a}}}

Discontinuous conveyor

This includes all shaft hoisting systems , conveyance with conveyor wagons in locomotive operation and trackless conveyance with shuttle wagons . The conveying capacity of this conveying means is in turn dependent on the useful content N of the conveying vessels, the average speed , the length of the conveying path L and the pause duration p between two conveying cycles. ${\ displaystyle \ textstyle {\ bar {v}}}$

{\ displaystyle Q = {\ frac {N} {2 * (L / {\ bar {v}} + p)}}}

If the shaft hoisting system is two-legged , i.e. with two conveying vessels at the same time, the conveying capacity is doubled compared to the above basic formula:

{\ displaystyle Q = {\ frac {N} {(L / {\ bar {v}} + p)}}}

literature

Mining Lexicon . In: Hans Grothe, Hermann Franke (Ed.): Lueger Lexikon der Technik . 4th completely revised and expanded edition. tape 4 mining. Deutsche Verlags-Anstalt, Stuttgart 1962, p. 219 .
Fritz Heise, Fr. Herbst, Carl Hellmut Fritzsche: Mining studies . Textbook of, with special consideration of the coal mining industry. 9th completely revised edition. tape 1 . Springer-Verlag, Berlin / Göttingen / Heidelberg 1957, p. 239-371 .

Individual evidence

↑ Instead of ρ, Fritsche gives the bulk density γ in t / m³, the filling cross-section has the symbol F instead of A.

[1] Instead of ρ, Fritsche gives the bulk density γ in t / m³, the filling cross-section has the symbol F instead of A.