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A platform for research: civil engineering, architecture and urbanism
Method for preparing baking-free bricks from iron tailings and waste residues
The invention discloses a method for preparing a baking-free brick by using iron tailings and waste residues, which comprises the following steps of: crushing the iron tailings, adding water to dilute the iron tailings into ore pulp, and performing strong magnetic separation in a magnetic separator to obtain a second ore group with lower iron content; subjecting the second ore group to acid pickling treatment after being subjected to water filtering and ball milling, and screening the ore into two piles of ore powder with different particle sizes after the acid pickling and drying treatment; then selecting masonry construction waste, crushing and pulverizing the waste, mixing the crushed masonry construction waste with the two piles of mineral powder in proportion, and mixing the mixed material serving as aggregate with Portland cement, auxiliary materials and water in proportion to prepare slurry; injecting the slurry into a mold, and sequentially carrying out natural curing, high-temperature steam curing and natural curing together with the mold to obtain the finished product baking-free brick for engineering. According to the invention, the baking-free brick which is excellent in physical performance and high in structural strength is prepared by using the iron tailings as the raw material, namely, a new solution can be found for resource utilization of the iron tailings.
本发明公开了一种利用铁尾矿以及废渣料制备免烧砖的方法，其先对铁尾矿进行破碎并加水稀释为矿浆，并利用磁选机中进行强磁磁选，得到含铁量较低的第二矿组；第二矿组在滤水球磨后进行酸洗处理，并在酸洗和烘干处理后筛分成不同粒径的两堆矿物粉末；然后选取砖石类建筑垃圾，破碎和粉碎后与两堆矿物粉末比例混合，并将混合后的物料作为集料与硅酸盐水泥、辅料以及水比例混合，制得浆料；将浆料注模，并连同模具依次进行自然养护‑高温蒸汽养护‑自然养护后即得到可用于工程的成品免烧砖。本发明利用铁尾矿作为原料制备物理性能优异、结构强度高的免烧砖，能为铁尾矿资源化利用寻找新的解决途径。
Method for preparing baking-free bricks from iron tailings and waste residues
The invention discloses a method for preparing a baking-free brick by using iron tailings and waste residues, which comprises the following steps of: crushing the iron tailings, adding water to dilute the iron tailings into ore pulp, and performing strong magnetic separation in a magnetic separator to obtain a second ore group with lower iron content; subjecting the second ore group to acid pickling treatment after being subjected to water filtering and ball milling, and screening the ore into two piles of ore powder with different particle sizes after the acid pickling and drying treatment; then selecting masonry construction waste, crushing and pulverizing the waste, mixing the crushed masonry construction waste with the two piles of mineral powder in proportion, and mixing the mixed material serving as aggregate with Portland cement, auxiliary materials and water in proportion to prepare slurry; injecting the slurry into a mold, and sequentially carrying out natural curing, high-temperature steam curing and natural curing together with the mold to obtain the finished product baking-free brick for engineering. According to the invention, the baking-free brick which is excellent in physical performance and high in structural strength is prepared by using the iron tailings as the raw material, namely, a new solution can be found for resource utilization of the iron tailings.
本发明公开了一种利用铁尾矿以及废渣料制备免烧砖的方法，其先对铁尾矿进行破碎并加水稀释为矿浆，并利用磁选机中进行强磁磁选，得到含铁量较低的第二矿组；第二矿组在滤水球磨后进行酸洗处理，并在酸洗和烘干处理后筛分成不同粒径的两堆矿物粉末；然后选取砖石类建筑垃圾，破碎和粉碎后与两堆矿物粉末比例混合，并将混合后的物料作为集料与硅酸盐水泥、辅料以及水比例混合，制得浆料；将浆料注模，并连同模具依次进行自然养护‑高温蒸汽养护‑自然养护后即得到可用于工程的成品免烧砖。本发明利用铁尾矿作为原料制备物理性能优异、结构强度高的免烧砖，能为铁尾矿资源化利用寻找新的解决途径。
Method for preparing baking-free bricks from iron tailings and waste residues
一种利用铁尾矿以及废渣料制备免烧砖的方法
LONG GUOHE (author) / CHENG ZHIYUAN (author)
2022-01-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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