Basics of metal mining influenced water by Virginia T McLemore; Society for Mining, Metallurgy, and

By Virginia T McLemore; Society for Mining, Metallurgy, and Exploration (U.S.)

Show description

Read Online or Download Basics of metal mining influenced water PDF

Similar mining books

Exhumation of the North Atlantic Margin: Timing, Mechanisms and Implications for Petroleum Exploration (Geological Society Special Publication, No. 196)

Unique book 196. Exhumation of the North Atlantic Margin: Timing, Mechanisms and Implications for Petroleum Exploration. Northwest Europe has passed through repeated episode of exhumation (the publicity of previously buried rocks) because of such elements as post-orogenic unroofing, rift-shoulder uplift, hotspot task, compressive tectonics, eustatic seal-level swap, glaciation and isostatic re-adjustment.

Common Well Control Hazards

Seriously illustrated with 900 photos of tangible good keep watch over websites, universal good keep watch over risks: identity and Countermeasures presents a visible illustration of 177 universal good keep watch over risks and the way to avoid or counteract them. the appropriate spouse for any engineer who must increase and follow their ability extra successfully, this “plain language” consultant covers universal good keep an eye on gear resembling: BOP regulate method, BOP manifold, kill manifold, drilling fluid restoration pipes, IBOP instruments, liquid gasoline separator, and fireplace, explosion & H2S prevention.

Offshore Safety Management. Implementing a SEMS Program

2010 was once a defining 12 months for the offshore oil and fuel within the usa. On April 20, 2010, the Deepwater Horizon (DWH) floating drilling rig suffered a catastrophic explosion and hearth. 11 males died within the explosion ― 17 others have been injured. the hearth, which burned for an afternoon and a part, finally despatched the complete rig to the ground of the ocean.

Designing for Human Reliability: Human Factors Engineering in the Oil, Gas, and Process Industries

Underestimates the level to which behaviour at paintings is inspired by means of the layout of the operating atmosphere. Designing for Human Reliability argues that better expertise of the contribution of layout to human mistakes can considerably improve HSE functionality and increase go back on funding. Illustrated with many examples, Designing for Human Reliability explores why paintings platforms are designed and applied such that "design-induced human errors" turns into more-or-less inevitable.

Extra info for Basics of metal mining influenced water

Sample text

Relative rates of acid-producing and acid-generating reactions are controlled in part by accessibility of minerals that contribute to these reactions. Natural AD occurs in some specific geologic environments (see, for example, Plumlee 1999; Posey et al. 2000). Certain types of hydrothermal alteration, which accompany some types of hydrothermal ore deposits, have characteristic high-pyrite and low-carbonate concentrations that together foster AD. Recognizing these features prior to mining can provide many indications about anticipated water quality and local groundwater hydrology.

However, iron and manganese carbonates (rhodochrosite, MnCO3) do not provide net acid neutralization due to reactions that may occur later under oxidizing conditions. Oxidation of the released iron or manganese and the subsequent acid production by hydrolysis and precipitation reactions, as hydroxides, result in the precipitation of the hydroxide from solution. Some reactions of silicate minerals will neutralize acid, such as dissolution of potassium feldspar (appendix, Equation 32), plagioclase (Busenberg and Clemency 1976), epidote, olivine (Hem 1970), or muscovite.

In practice, leaching solutions may be acidic, neutral, or alkaline water, either heated or unheated. In deposits where ore-bearing minerals are sparingly soluble, oxidants such as dissolved oxygen or hydrogen peroxide and complexing agents such as chlorine dioxide gas, or CO2(g), are often used to accelerate leaching rates. In deposits where soluble mineral forms are solution mined, such as soda-bearing minerals like nahcolite, heated water is often sufficient for extraction. In either type of deposit, the host rock must be permeable enough to allow injected fluids to contact the ore-bearing minerals and also to be recovered again through boreholes.

Download PDF sample

Rated 4.13 of 5 – based on 11 votes