To filter used for tin ore dressing plant area advantage of the ecological recovery plant, on to the mountain of yunnan tin tailings wastelands on-the-spot investigation, document and plant
samples collected 15 kinds of advantages and its
portable
gold wash plant corresponding rhizosphere. Determination of copper (Cu), cadmium (Cd), arsenic (As), nickel (Ni), lead (Pb) and tin (Sn) content, calculate the 15 kinds of plants for
the transfer and enrichment coefficient of 6 kinds of heavy metal, measured at the same time analyzed the plant roots mycorrhizal infection rate and chemical properties of rhizosphere,
comprehensive assessment application potential of native plants.
The results showed that the soil pH average of 3.13, a strong acid; Organic matter, total nitrogen, total phosphorus, total potassium, alkali solution nitrogen and effective phosphorus
average 6.07 g · kg 1,5.74,0.62 g · g · kg - 1 kg - 1,8.66,30.84 g1kg - 1 and 2.08 mg1kg mg1kg - 1-1, nutrient poorer; Soil Cu, Cd, Ni, Pb, As and Sn content average were 347.40, 1.02,
1.34, 168.47, 25.81 and 2299.02 mg1kg - 1, in which the content of Cd pollution has reached level 3 alert value of Cu and Pb content and spatial distribution difference is big, Cu, Pb and
fragrans olive (Olea europaea l.) and suzuki (Eurya japonica Thunb.) the root of mycorrhizal infection rate is relatively high, alder (Alnus cremastogyne Burk.), small silk jean bamboo
[Bambusa multiplex (Lour.) Raeusch. Ex Schuh. 'Alphonse - Kar R.A.Y oung], bulrush (Juncus effusus l.) and sedges (Cyperus rotundus l.) and has a strong ability of absorption and transport
of heavy metals, and the rest of the plants have adapted to the growth of tin tailings wastelands, repair the potential value of the mine area.
Coarse tin ore dressing plant than the big stone, gravity separation is between the other main method, and obtain good indicators. However, cassiterite is crisp, easy to shatter, when
broken produce fine cassiterite ore grade, therefore, use gravity separation process, the overall indexes is not ideal. Tin ore dressing plant composition is complicated, and accompanied by
a variety of useful metal, tin ore dressing plants beneficiation process is complex, low recovery rate (30% ~ 60%). Tin ore dressing plant of beneficiation process mainly oriented to
machine separation, flotation, electricity and other physical separation method, and chemical beneficiation methods such as roasting, leaching and extraction; Process using multiple
stage grinding and don't early closed early, strengthen primary and desliming operation, etc.
