Aluminum products are one of the most widely used metals. The current output and consumption of aluminum (in tons) is second only to steel and has become the second-largest metal for human application.
Bauxite is mainly used to extract aluminum. About 85% of bauxite can be refined into alumina and then smelted into aluminum, 8% for chemical alumina, and 7% for refractory materials, proppants, and cement.
Ore washing is the simplest and most effective method to improve the bauxite aluminum-silicon ratio by about 2 times. But you need to combine the ore washing process with other methods including classification -Manual selection process.
3Control the concentration of the pulp, adjust the parameters of the classification equipment to achieve the separation of coarse and fine particles, and reduce the lower limit of recycled particle size.
1Because collecting agent contains the surface-active substances, the foam of each operation of bauxite flotation is very sticking and big-volume. So, the general quantity of water will consume alarge amount of foam flushing waters, finally reducing the concentration of the flotation system.
In addition to aluminum and iron minerals, high iron bauxite is also accompanied by valuable metals such as gallium and vanadium, of which Ga content is 0.0044% ~ 0.0070%, V205 content is 0.148% ~ 0178%.
1However, the content of aluminum and iron is relatively low so that whether it is a single aluminum ore or a single iron ore, it is difficult to meet the basic requirements of industrial applications.
2Besides, the iron and aluminum minerals are embedded in a very fine grain size. Most minerals are poorly crystallized, some are colloidal and cemented with each other, and the embedding relationship is extremely complicated.
The chemical method means that we should fully dissociate aluminum minerals and silicon minerals in bauxite. The physical method uses classification equipment for bauxite concentrate. Outstanding features of the combination of the two ways:
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VBX are the proponents of the Wuudagu Bauxite Project on Wunambal Gaambera country, in the far north of Western Australia. Wuudagu is proposed as a bauxite mine, beneficiation plant and transhipment operation. The Project could employ up to 100 people during construction and up to 250 people during operations. Subject to statutory approvals, the Project could commence from 2022.
Executive Director of the Council, Marghanita Johnson said We welcome VBX to the Council. We are excited by the potential the Wuudagu Project has to provide training, employment and economic opportunities for the local community and support the development of economic infrastructure in the region.
While Wuudagu is undergoing final feasibility studies and approvals, membership of the Council enables VBX to engage with other members of the Australian bauxite industry during these planning phases.
Australia is the worlds largest producer of bauxite, producing more than 100 Mt in 2019. The industry has almost six decades of experience of operating in Australia. Australian bauxite deposits have high grades and are shallow and relatively easy to mine. The nature of bauxite mining also means it is well suited to progressive rehabilitation.
In 2018 the Council, together with the International Aluminium Institute and the Brazilian Aluminium Association, co-authored the Sustainable Bauxite Mining Guidelines, which aim to share the expertise learned from decades of sustainable mining practices in Australia with the global industry. VBX is proposing to develop and operate Wuudagu responsibly and in accordance with these guidelines.
We know that long term demand for aluminium is strong and that increasing quantities of aluminium will be used globally as living standards improve, transport systems become more efficient and innovative lightweight construction systems are favoured. As a strong and lightweight material that can be infinitely recycled, aluminium plays an important role in a low carbon future.
Around 60% of Australias bauxite production is converted to alumina domestically, making Australia the largest exporter of alumina. With wealth of mineral and energy resources, Australia should be well placed to capitalise on these competitive advantages.