The lawn species with high salt tolerance have been selected through studing the relative germination percentage and root growth amount of different species in different salt concentration.
试验对黑龙江省常用草坪品种进行了萌发期耐NaHCO3能力比较,通过对不同盐浓度下各草种的相对发芽率和幼根生长量等分析研究,筛选了萌发期耐苏打盐土能力较强的草种。
Study on Novel Technology of Copper Dross Smelting with Soda-lead Concentrate;
铜浮渣苏打——铅精矿熔炼新工艺研究
Study on synthesis of sodium bicarbonate by double decomposition method;
复分解法制备小苏打的研究
Novel process for sodium bicarbonate preparation by low-temperature synthesis;
合成法生产小苏打的新工艺
Status quo of sodium bicarbonate production in China and its development proposals;
中国小苏打生产现状及发展探讨
The research of the sodium thiphite production problems by the ways of complex reusing has adjusted the processing controlling indexes,improved the condensing equipments that make use of the discharged wasted hydrogen from chlor-alkali system,and lowered the producing cost.
通过对综合回收大苏打生产问题的研究,调整了生产的工艺控制参数,并改进浓缩装置,综合利用氯碱的排空废氢气,降低了生产成本,使生产大苏打工艺得到提高,技术得到改进。
This paper presents a process for preparing high purity tungsten trioxide in which Shizhuyuan high molybdenum scheelite concentrates are treated by molybdenum removal and NaHS extraction of tertiary amine, evaporation and crystallization using the autoclave-soda process.
介绍了采用苏打压煮、NaHS除钼、叔胺萃取、蒸发结晶处理柿竹园高钼白钨精矿 ,生产高纯三氧化钨的工艺。