What is an Alimak Miner?

What is an Alimak Miner?

Alimak mining uses a specialized piece of equipment called a raise climber (or, casually, an “Alimak”) to drive a raise upwards from the bottom level of the stope to the top level, following the dip of the ore body. Eliminating the intervening levels cuts out a good chunk of lateral development time and spending.

What is haulage in underground mining?

In coal mining: Haulage. Coal haulage, the transport of mined coal from working faces to the surface, is a major factor in underground-mine efficiency. It can be considered in three stages: face or section haulage, which transfers the coal from the active working faces; intermediate or panel haulage,…

What is Tramming distance?

The tramming distance is defined as the distance from the loading location to the active face and is ranging from 250m to 550m. The cycle time will be higher for equipment working at the far end of the drift than for equipment in the middle or near the access.

What is truck factor mining?

The curse of truck factors: Truck factors are conversions applied to, usually, the volume but sometimes the tonnage, of trucks from underground mines or open pits going to either the ROM stockpiles, the mine stockpiles, or directly to the crusher.

How do ore chutes work?

An ore chute is a device that allows chunks of rock (muck) to be transported by force of gravity from one level of the mine to another level.

Why do they flood mines?

Underground mines One of the main reasons to let an underground mine be flooded is to avoid disulfide oxidation, and thus avoid acid mine drainage. Other important reason is safety: people coming to underground mines without safety precautions or the presence of dangerous mine gases.

What is spotting in mining?

Spotting refers to the time the truck positions itself for loading. (4) Loading in terms of trucks refers to the time the shovel loads the truck. This is the time the truck spends on the loading area.

What is mining payload?

Payload 2 is a highly accurate, real-time dipper load weighing system that helps your operators maximize truck load without overfilling. Every truck has its own optimal target load at which you minimize cost and maximize profit.

What are chutes in mining?

Chutes are used to transport material from one process step to another in mining operations. When material is fed into a process or discharged from it, chutes collect, convey and prepare the material flow for the following processing phase.

What is a level in mining?

Levels often had metal track-ways laid for the use of wagons to carry Spoil (waste products) and ore to the surface. These were often pushed by the miners, but in some mines ponies were used to haul the wagons. The uphill nature of levels helped with the removal of heavy wagons.

What is a Tramming tool?

When tramming, a dial indicator attached to the chuck is used to determine the orientation of the mill head to the mill table. The same wrench used to tighten and loosen the quill can be used to adjust the various bolts on the mill head. Dial indicator used for tramming the head.

What is payload productivity?

Payload management systems allow you to take control of productivity while eliminating over- and under-loading of trucks. These systems can also reduce loading time and truck traffic. When operators load the right amount of material on the truck every time, more work gets done.

What is nominal payload?

Nominal Rated. Payload is used in general discussions to designate the truck size class. It does not account for Debris Weight and is equal to the Rated Gross Machine Weight minus the NEMW.

What is an ore pass?

An ore pass is a mining shaft used to transfer ore and mining waste from the mine. Ore passes are a convenient way to transport and handle materials and minimize hauling distances between levels in a mine. In this guide, we’ll cover the following topics: Considerations for Building an Ore Pass.