Geology of the world and the Environment

2021-06-22 13:16:30 How to Process Low-Grade Lead Zinc Ore, Gravity Separation for Low-grade Lead Zinc Ore

Lead-zinc ore is a common metal mineral. In the past, the beneficiation of lead-zinc ore was dominated by flotation. As time goes by, there are fewer and fewer rich ore. If adopts froth flotation to process low-grade lead-zinc ore, although qualified concentrate can be produced, there is no economic benefit or even loss.

One thing that must be considered in the beneficiation of low-grade lead-zinc ore is: how to reduce production costs and equipment investment costs.

Here we will introduce a beneficiation solution for low-grade lead-zinc ore: pre-concentration by gravity separation, it can effectively discard the gangue in the raw ore, improve the grade by mineral jig machine.
Then send it to the flotation plant or sold directly(for some type of lead zinc ore, the final concentrate can be produced directly by gravity separation).

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https://www.geologyhere.com/blog/how-to-process-low-grade-lead-zinc-ore/
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2021-06-21 22:32:01 Hydrology Principles

Hydrology is a long continuing hydroscience and much work done in this field in the past, particularly in India, was of empirical nature related to the development of empirical formulae, tables, and curves for yield and flood of river basins applicable to the particular region in which they were evolved by investigators like Binnie, Barlow, Beale and Whiting, Strange, Ryves, Dicken, Inglis, Lacey, Kanwar Sain, and Karpov, etc

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https://www.geologyhere.com/blog/books/hydrology-principles/
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2021-06-16 12:47:56 JOHN P RAFFERTY EDITOR MINERALS GEOLOGY LANDFORMS, MINERALS ( Download for Free )

If a rock can be thought of as the foundation upon which all life on Earth stands, minerals are the foundation
upon which rocks are built. Essentially, minerals are the most simple chemical compounds that makeup rocks.
This book is designed to take the reader on a tour of the various mineral groups, the unique characteristics that
set one mineral apart from another, the features different groups of minerals share, and the roles minerals play in the rocks themselves.

Each of the roughly 3,800 known mineral types has a unique chemical and physical structure. Such com-
pounds may be relatively simple, as in a deposit of gold (Ag), or they may be relatively complex combinations
of several elements, as in the phosphate mineral turquoise (CuAl6(PO4)4(OH) ∙ 4H2O). Such combinations
of chemical elements repeat throughout the mineral’s structure, and the mineral’s unique chemistry also drives
its internal physical structure.

All minerals are solids and occur as crystals, and the ordered arrangements of repeating molecules generate
the mineral’s crystal form. Since the chemistry of each mineral is different, no two minerals can produce the
same crystals. Thus, the shape of each mineral is unique, a feature useful for determining its identity. This unique
crystal form can change when temperature and pressure conditions change. Diamond and graphite, for example,
are different forms of mineral carbon; however, diamond develops under high-temperature and high-pressure conditions.



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