Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention provides a powder suspension calcining process for lead-zinc ore beneficiation waste residues. The powder suspension calcining process comprises the following steps of raw material stacking, raw material drying, powder suspension calcining kiln treatment, cooling tower treatment, dust remover treatment, desulfurization and denitrification. According to the powder suspension calcining process for the lead-zinc ore beneficiation waste residues, a shaft kiln or a novel mechanical beam type shaft kiln is adopted, the requirement for the particle size of calcium oxide ore is 40-80 mm, if the shaft kiln or the novel mechanical beam type shaft kiln is adopted in the project, a large amount of fly ash can be caused, calcination is not suitable, and therefore the problem that the calcium oxide ore cannot be calcined easily is solved. The calcia powder suspension calcining process is adopted, and the main characteristics are as follows: a kiln liner is vase-shaped, an annular flue is arranged for smoke discharge for forced ventilation matching, a kiln body heat preservation pouring structure is arranged, a heat insulation and heat preservation layer is arranged, the heat loss is less, auxiliary equipment linkage is realized, a calcining furnace grate is matched with an automatic ash discharging system, three-section unloading is realized, the thermal regulation is stable, the kiln volume is more than 50-120m < 3 >, and the utilization coefficient is 0.8-0.9 t/m < 3 >; a single kiln or a plurality of kilns can be combined to form a production line, and the device has the advantages of small occupied area, investment saving, good effect and fast recovery.
本发明提供一种铅锌矿选矿废渣采用粉末悬浮锻烧工艺，包括以下步骤：原料堆棚、原料烘干、粉末悬浮煅烧窑、冷却塔、除尘器、脱硫、脱氮。本发明提供的一种铅锌矿选矿废渣采用粉末悬浮锻烧工艺，采用竖窑或者新型机械梁式竖窑对氧化钙石矿粒径要求为40‑80mm，如果本项目采用竖窑或者新型机械梁式竖窑，会造成大量飞灰，不宜煅烧，因此，本项目采用氧化钙石粉末悬浮煅烧工艺，其主要特性：窑内胆花瓶形，排烟设环形烟道强制通风配套，窑体保温浇筑结构，设隔热、保温层，热损少，辅助设备联动，煅烧炉排配自动出灰系统，三段式卸料，热工制度稳，窑容积50‑120m3以上，利用系数0.8‑0.9t/m3，可单座窑或多座窑组合成一生产线，具有占地少、投资省、效果好、回收快。
The invention provides a powder suspension calcining process for lead-zinc ore beneficiation waste residues. The powder suspension calcining process comprises the following steps of raw material stacking, raw material drying, powder suspension calcining kiln treatment, cooling tower treatment, dust remover treatment, desulfurization and denitrification. According to the powder suspension calcining process for the lead-zinc ore beneficiation waste residues, a shaft kiln or a novel mechanical beam type shaft kiln is adopted, the requirement for the particle size of calcium oxide ore is 40-80 mm, if the shaft kiln or the novel mechanical beam type shaft kiln is adopted in the project, a large amount of fly ash can be caused, calcination is not suitable, and therefore the problem that the calcium oxide ore cannot be calcined easily is solved. The calcia powder suspension calcining process is adopted, and the main characteristics are as follows: a kiln liner is vase-shaped, an annular flue is arranged for smoke discharge for forced ventilation matching, a kiln body heat preservation pouring structure is arranged, a heat insulation and heat preservation layer is arranged, the heat loss is less, auxiliary equipment linkage is realized, a calcining furnace grate is matched with an automatic ash discharging system, three-section unloading is realized, the thermal regulation is stable, the kiln volume is more than 50-120m < 3 >, and the utilization coefficient is 0.8-0.9 t/m < 3 >; a single kiln or a plurality of kilns can be combined to form a production line, and the device has the advantages of small occupied area, investment saving, good effect and fast recovery.
本发明提供一种铅锌矿选矿废渣采用粉末悬浮锻烧工艺，包括以下步骤：原料堆棚、原料烘干、粉末悬浮煅烧窑、冷却塔、除尘器、脱硫、脱氮。本发明提供的一种铅锌矿选矿废渣采用粉末悬浮锻烧工艺，采用竖窑或者新型机械梁式竖窑对氧化钙石矿粒径要求为40‑80mm，如果本项目采用竖窑或者新型机械梁式竖窑，会造成大量飞灰，不宜煅烧，因此，本项目采用氧化钙石粉末悬浮煅烧工艺，其主要特性：窑内胆花瓶形，排烟设环形烟道强制通风配套，窑体保温浇筑结构，设隔热、保温层，热损少，辅助设备联动，煅烧炉排配自动出灰系统，三段式卸料，热工制度稳，窑容积50‑120m3以上，利用系数0.8‑0.9t/m3，可单座窑或多座窑组合成一生产线，具有占地少、投资省、效果好、回收快。
Powder suspension calcining process for lead-zinc ore beneficiation waste residues
一种铅锌矿选矿废渣采用粉末悬浮锻烧工艺
LIU LONG (Autor:in)
26.01.2024
Patent
Elektronische Ressource
Chinesisch
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