盛堂祥



摘 要:本文對攀鋼提釩煉鋼廠的板坯連鑄機的過濾器進行改造,以纖維束濾料代替原來的無煙煤+石英砂+鵝卵石的濾料,并進行效果對比檢驗。研究表明:纖維束濾料對連鑄濁環水過濾效果良好,反洗時濾料放松,沒有死角,濾料不積泥,不流失,反洗徹底;纖維束濾料的使用壽命長,一般大于10年,有利于節約成本。
關鍵詞:濁環水系統;無煙煤過濾器;纖維束過濾器;效益
中圖分類號:TF341.6 文獻標識碼:A 文章編號:1003-5168(2019)31-0044-03
Application of Fiber Bundle Filter Media in Continuous
Casting Turbid Circulating Water System
SHENG Tangxiang
(Vanadium Steel Plant, Pangang Group Panzhihua Vanadium Steel Co., Ltd.,Panzhihua Sichuan 617000)
Abstract: In this paper, the filter of slab caster in Pangang Group Panzhihua Vanadium Steel Co., Ltd. was modified to replace the original anthracite + quartz sand + pebble filter material with fiber bundle filter material, and the effect was compared and tested. The results show that the fiber bundle filter material has a good filtering effect on the turbid circulating water of continuous casting. When backwashing, the filter material is relaxed, there is no dead angle, the filter material does not accumulate mud, does not lose, and the backwashing is thorough; the service life of the fiber bundle filter material is long, generally more than 10 years, which is conducive to cost saving.
Keywords: turbid circulating water system;anthracite filter;fiber bundle filter;benefit
攀鋼提釩煉鋼廠現有1350板坯連鑄機兩臺,澆注鋼種有Stb系列、P440L、Q195、P510L等,對其質量要求嚴格,而連鑄坯質量與連鑄濁環水處理效果有著非常密切的關系。而濁環水最主要的用量就是二冷水,二冷水水質差是板坯產生缺陷的重要原因之一,如使板坯變形、鼓肚、漏鋼等[1-3]。攀鋼連鑄機二冷噴淋冷卻的噴嘴經常堵塞,造成二冷水冷卻不均勻,影響連鑄坯的產量和質量。噴嘴堵塞的原因是濁環水水質較差。通過對過濾器濾料進行改進,用纖維束作為濾料,解決了因二冷水水質差造成噴嘴經常堵塞的問題,既保證了連鑄機穩定生產,又較好地改善了鑄坯質量。
1 連鑄濁環系統概況
濁環水系統是敞開式循環冷卻水系統的一種,是鋼鐵企業所特有的系統。系統中冷卻水與冷卻介質直接接觸冷卻,故又稱為直接水系統。濁環水污染較為嚴重,會影響連鑄坯的質量。為了保證出水水質達標和工廠長期安全生產,回水就需要通過水處理構筑物進行處理。……