High-concentration ore discharge tailing pond upstream method damming construction method
A construction method, mine tailings technology, applied in the direction of instruments, electrical digital data processing, computer-aided design, etc., can solve the problems of reduced effective dam construction, reduced sand settling rate, and reduced average particle size of sand settling particles
Pending Publication Date: 2022-03-15
NANCHANG INST OF SCI & TECH
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Problems solved by technology
The coarser the average particle size of the sand settling particles, the better the quality, and the better the forming quality and stability of the tailings accumulation dam, but the sand settling rate will be greatly reduced, resulting in a decrease in the effective dam construction; the higher the sand settling rate, the better the quantity The more it is, the easier it is to meet the earthwork demand for engineering construction, but the average particle size of the settling particles will decrease, which is not good for the overall stability of the tailings dam
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[0067] Step 1. Collect relevant calculation parameters for grading and damming of tailings ponds and calculate key parameters
[0068] (1) According to the design scheme of the tailings pond, the engineering volume V is obtained dam , the height of the dam body H, the control area of the tailings reservoir to be dammed A, and the storage capacity utilization coefficient Design values of other parameters.
[0069] (2) Obtain the value of the tailings output M of the dressing plant through on-site investigation.
[0070] (3) The true specific gravity of tailings G can be obtained through indoor testing s and tailings dam grit dry density ρ d value.
[0071] (4) On-site sampling test to obtain the natural density ρ of beach tailings b and the value of -200 mesh particle content P in the raw ore, the concentration C of the original tailings and the concentration C of the flushing slurry f .
[0072] (5) According to the engineering experience, the -200 mesh particle co...
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The invention provides an upstream method damming construction method for a high-concentration ore discharge tailing pond, 13 calculation parameters in a high-concentration tailing grading damming site construction process are summarized and concluded, and a theoretical calculation formula about a key parameter construction period T, an underflow sand setting rate gamma u and a raw ore distribution rate eta based on a sand amount balance principle is provided. Meanwhile, on the basis, a hydrocyclone type selection and number calculation method based on the separation granularity is provided. And finally, the distribution process between the production scale of the selection plant and the damming construction efficiency is elaborated, and a systematized rotational flow grading process parameter calculation method is provided. The rotational flow grading damming system is arranged on a damming construction site, so that theoretical guidance is provided for determining the size of a slurry preparation tank, the size and the length of a conveying pipeline and model selection of electromechanical equipment. According to the method, a systematic theoretical guidance and calculation method is provided for high-concentration tailing grading damming construction, and the current situation that in the current high-concentration tailing damming process, theoretical design methods of a grading damming system are deficient is improved.
Description
technical field [0001] The invention relates to a high-concentration ore-discharging tailings reservoir upstream method dam construction method, which can be widely used in domestic mining enterprises tailings reservoir graded upstream method dam-building and coastal reclamation engineering fields. Background technique [0002] In my country, the tailing ponds of most non-ferrous metal mines are dammed by the upstream method. In the tailings pond built by the upstream method, if the average particle size of the tailings entering the pond is d p ≤0.03mm, -0.019mm particle content is greater than 50%, +0.074mm particle content is less than 10% and +0.037mm particle content is not less than 30%, this type of tailings belongs to fine-grained tailings and is not suitable for direct dam construction. However, it can be classified by hydrocyclone, and the high-concentration sand settling produced after classification can be used for dam construction. The domestic engineering circl...
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Patent Timeline
Login to View More IPC IPC(8): G06F30/13G06F30/28G06Q50/08G06F113/08G06F119/14
CPCG06F30/13G06F30/28G06Q50/08G06F2113/08G06F2119/14
Inventor 燕琴刘欣欣盛明强薛光绪万梦丹艾罗艳彭雅娟
Owner NANCHANG INST OF SCI & TECH