共查询到19条相似文献，搜索用时 48 毫秒
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察尔汗盐湖盐田光卤石矿成矿机理与盐田生产实用管理模型探讨 总被引：1，自引：1，他引：0
青海察尔汉盐湖是我国已探明储量的最大可溶性钾镁盐矿床,同时也是我国唯一的大型钾肥生产基地。本文根据多年对盐田生产定期取样分析的研究,系统探讨了大面积深水盐田的成矿机理与生产管理应用模型的建立与运行方法,对生产具有较强的指导意义。 相似文献
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根据察尔汗盐湖别勒滩卤水等温蒸发试验数据,结合大量生产取样分析资料,对盐田光卤石矿生产机理及其控制因素作了分析研究,并提出了管理措施。 相似文献
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在描述和计算多组分高浓电解质溶液化学平衡方面 ,Pitzer理论及其半经验方程体系是迄今为止最有成效的成果。后继研究者以Pitzer理论为基础 ,建立了较有代表性的HW模型、HMW模型以及SMW模型。针对察尔汗盐湖实际情况 ,作者选择SMW模型并自行开发出计算程序 ,通过溶解驱动开采固体钾矿的室内试验所用溶剂的化学平衡计算 ,分析了各溶剂的溶矿能力 ,提出溶剂中光卤石不饱和是其溶解固相钾矿的关键所在 ,综合利用钾肥厂尾液和盐田老卤作为溶解驱动固体钾矿的溶剂在理论上是可行的 相似文献
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从盐田蒸发结晶机理出发 ,分析了盐田生产的影响因素 ,概述了察尔汗盐湖盐田系统生产现状及工艺技术、管理中存在的问题 ,提出了改善盐田生产系统的措施和优化方法 ,并与国外同类型卤水盐田滩晒指标进行了对比。结论认为 ,通过转变观念 ,提高科学管理水平 ,及时对各方面进行“调整”,应用系统论 ,保证钠盐池与光卤石池物料平衡、面积比例最优 ,并使调节池富有弹性 ,是察尔汗盐湖所有钾肥企业实现盐田系统乃至钾肥生产系统优质、稳产、高产的一项长期的战略方针 相似文献
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利用资源丰富的青海察尔汗盐湖卤水，通过蒸发结晶、净化脱硫、兑卤、分段析盐和洗涤等加工处理，提取优质光卤石，使之满足炼镁指标要求，以替代人造光卤石电解制取金属镁．此外，亦可用于冷结晶法生产氯化钾． 相似文献
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硫酸钾是重要的无氯钾肥,其生产方法较多。主要介绍“利用盐田光卤石和天然无水芒硝为原料制取硫酸钾”的专利技术的实施与进展,对年产万吨硫酸钾工业性试验的实际运行结果进行了分析与总结 相似文献
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首次从化学工程的角度 ,将盐田系统作为一类特殊的化学反应器和无机盐分离设备进行了详细的论述。在大量试验基础上 ,系统地分析和研究了 Na+,K+,Mg2 +∥Cl-,- H2 O四元水盐体系卤水在天然蒸发状态下的宏观蒸发动力学参数。从理论上对与卤水蒸发相关的多种参数进行了分析和合理简化 ,概述了卤水蒸发过程中的质量传递规律。并在此基础上通过计算机模拟方法建立了四元水盐体系高浓度卤水在特定地域中进行天然蒸发的卤水宏观蒸发动力学模型 ,证明了多种简化和理论假设的合理性。对该数学模型在盐湖卤水开发中的盐田设计、盐田生产的现代化自动管理和控制等进行了探讨。在卤水蒸发动力学模型建立的过程中 ,针对实际生产过程的需要 ,通过多种参数的分析 ,建立了多种参数关系 相似文献
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Aspects of communities and events in the concentrating ponds (S.G. 1.130 to 1.214) and salt crystallizing ponds (S.G. 1.215 to 1.264) of solar saltworks pertinent to salt manufacture are described. Communities that aid salt manufacture enable continuous and efficient production of high quality salt at a saltworks' design capacity, and they provide important controls on levels of organic matter in the brine. Fluctuating salinities, high concentrations of nutrients, and petroleum products are disturbances that causeAphanothece halophytica andDunaliella salina to release excessive quantities of organic matter, and that suppress or cause death to nutrient stripping organisms. Disturbances result in decreased quality and quantity of salt and increased costs for salt harvest, washing, and pond upkeep. Organic matter can be controlled by management techniques that keep nutrient stripping communities at proper levels and maintain a narrow and unchanging range of salinities in each pond, by constructing pond dikes able to withstand wind and water erosion, and by preventing spills of petroleum products in the ponds. 相似文献
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提出了青海盐湖钾肥公司据生产需要 ,开辟新的采卤区后 ,卤水组份发生变化问题。根据分析与试验探讨了CaCl2 在盐田生产中的影响及应采取的措施 相似文献
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详细综述了太阳池的一般原理、大阳池的用途、太阳池的建造和运行、太阳池的主要理论、特殊大阳池技术、及大阳池的国内外研究应用状况． 相似文献
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Sediment depth was measured at several sites within each of eight beaver ponds in Glacier National Park, Montana, and sediment samples wen; collected from five of these ponds. Accumulation rates of sediments far exceeded published rates from boreal forest landscapes in eastem and central North America. Pond area strongly predicts volume of sedimentation. Textural differences illustrated spatial variations associated with position in a pond and along a pond sequence. Organic matter content was significantly higher in older ponds, and has ramifications for the development of the benthos and the long-term storage of matter in ponds. The role of beavers as biogeomorphic agents is profound, but requires further elucidation to distinguish between fluvial sediment deposition in ponds and sediment deposition associated with beaver excavational activity. 相似文献
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Phytoplankton distribution was not homogeneous among Limousin ponds and within each pond, as shown by chlorophyll a and diatoms in two representative eutrophic ponds. On a small cartographic scale, differences depended on geographic location and water temperature. Spring bloom occurred with a time-lag of several weeks in the highland pond. On a large-scale geographic distribution depended on hydroclimatic factors, especially wind direction and inflow of the rivers. The high concentrations of chlorophyll a near the dam of the water bodies roughly coincided with the maximum fetch and the direction of the dominant winds during the investigations. In both ponds the heaviest algae seemed not to be influenced by wind currents and the greater number of diatoms upstream in the highland pond was probably due to inflow of silica from the river. Phytoplankton mapping is more explanatory and rigorous than Secchi disk transparency mapping, it is useful to the regional authorities for zoning activities: bathing should be avoided in bays and along longitudinal shores, fishing location may be less restrictive. In plateau regions in general phytoplankton is not randomly distributed and spatial heterogeneity of ponds is not only vertical but also horizontal. Deep and embanked ponds are complex organisms analogous to great lakes for some features and to shallow water bodies for other ones. 相似文献