基于響應面法的全尾砂靜動(dòng)態(tài)絮凝沉降規律研究
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1.平頂山工業(yè)職業(yè)技術(shù)學(xué)院;2.長(cháng)沙礦山研究院有限責任公司

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中圖分類(lèi)號:

TU853.34

基金項目:

“十四五”國家重點(diǎn)研發(fā)計劃項目(2020YFC1909205);


Study on static and dynamic flocculation settlement law of total tailings based on the response surface analysis method
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Pingdingshan Polytechnic College

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    摘要:

    尾砂濃密脫水是尾砂充填工藝的關(guān)鍵環(huán)節,為探究某礦山全尾砂濃密脫水性能,在尾砂基本物化性質(zhì)的基礎上征拆,開(kāi)展了全尾砂靜動(dòng)態(tài)絮凝沉降試驗纽什,設計了以尾砂漿入料質(zhì)量濃度、絮凝劑添加類(lèi)型、絮凝劑摻量為影響因素,沉降速率為研究指標的靜態(tài)絮凝沉降試驗钟鸵,以給料速度、給料質(zhì)量濃度、絮凝劑摻量為影響因素,溢流水含固量傲钳、底流質(zhì)量濃度和尾砂沉降速度為研究指標的動(dòng)態(tài)絮凝沉降試驗净捅,并基于響應面分析法,揭示了全尾砂在多因素交互作用下的動(dòng)態(tài)絮凝沉降規律。結果表明:1)通過(guò)靜態(tài)絮凝沉降試驗害晦,最優(yōu)絮凝劑型號為CKFA02#,絮凝劑最佳添加量為20g/t,尾砂料漿最佳進(jìn)料質(zhì)量濃度為10%~12.5%窟怪;2)根據動(dòng)態(tài)絮凝沉降試驗構建的響應面模型吻拼,底流質(zhì)量濃度和溢流水含固量影響最大因素為料漿進(jìn)料速度,尾砂沉降速度最大影響因素為料漿進(jìn)料質(zhì)量濃度,料漿進(jìn)料速度與進(jìn)料質(zhì)量濃度交互作用對底流質(zhì)量濃度影響最大者个,料漿進(jìn)料速度與絮凝劑添加量對溢流水含固量影響最大握簸,料漿進(jìn)料速度和絮凝劑添加量對尾砂沉降速度影響最大帅挫;3)最優(yōu)沉降參數為尾砂漿進(jìn)料速度0.55 t/m2·h,進(jìn)料質(zhì)量濃度11.12%,絮凝劑添加量為30.0g/t,在該最優(yōu)絮凝沉降參數下,底流質(zhì)量濃度為60.6%,溢流水含固量為251.4mg/L,尾砂沉降速度為58.06mm/s。

    Abstract:

    Dense dewatering of tailings is a key link in the tailings filling process. In order to explore the dense dewatering performance of tailings in a mine, static and dynamic flocculation sedimentation tests of tailings were carried out on the basis of the basic physicochemical properties of tailings. A static flocculation sedimentation test was designed with the mass concentration of tailings slurry, the type of flocculant added and the amount of flocculant added as the influencing factors and the sedimentation rate as the research index. The dynamic flocculation sedimentation test with feed speed, feed mass concentration and flocculant content as influencing factors, and solid content in overflow water, underflow mass concentration and settling velocity of tailings as research indexes, and based on RSM analysis method, revealed the dynamic flocculation settlement law of total tailings under the interaction of multiple factors. The results showed as follows: 1) Through the static flocculation sedimentation test, the optimal flocculating dosage was CKFA02#, the optimal addition amount of flocculant was 20g/t, and the optimal feed concentration of tailings slurry was 10%~12.5%; 2) According to the response surface model established by dynamic flocculation settlement test, the biggest factor affecting underflow mass concentration and solid content in overflow water is slurry feeding speed, and the biggest factor affecting tailings settling speed is slurry feeding mass concentration. The interaction between slurry feeding speed and feed mass concentration has the biggest influence on underflow mass concentration. Slurry feed rate and flocculant add amount have the greatest influence on the solid content of overflow water, slurry feed rate and flocculant add amount have the greatest influence on the settling rate of tailings. 3) The optimal settlement parameters are the feed rate of tail mortar 0.55t /m2·h, feed mass concentration 11.12%, flocculant addition amount 30.0g/t. Under the optimal flocculation settlement parameters, the underflow mass concentration is 60.6%, the solid content of overflow water is 251.4mg/L, and the settlement rate of tail sand is 58.06mm/s.

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  • 收稿日期:2024-05-06
  • 最后修改日期:2024-06-18
  • 錄用日期:2024-06-19
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