硅酸钠

The invention relates to a middle-density pulp hydrogen dioxide dual-tower blanch method, which comprises:(1) washing and concentrating the pulp;(2) adding NaOH in 0.5-1.5%, sodium silicate in 0.5-3%, bitter salt in 0.05-0.5% and barium dioxide in 1.0-2.5%,, and adding slurry to 70-100Deg. C;(3) 1# blanch tower blanches, while the temperature is 70-100Deg. C, and the reaction time is 30-90mins;(4) 2# blanch tower blanches, while adds barium dioxide in 0.5-1.5% and some blanch agent, while keeps the temperature in 70-100Deg. C and the reaction time is 30-90mins;(5) adding water, and washing to attain blanch slurry.

本发明公开一种中浓纸浆过氧化氢双塔漂白方法，包括(1)纸浆洗涤浓缩；(2)加入绝干浆重量的0.5～1.5％NaOH、0.5～3％硅酸钠、0.05～0.5％硫酸镁和1.0～2.5％过氧化氢等，将纸浆加热至70～100℃；(3)1#漂白塔漂白：温度为70～100℃，反应时间为30～90分钟；42#漂白塔漂白：补加0.5～1.5％的过氧化氢及适量漂白助剂，保持温度70～100℃，反应30～90分钟；(5)加水稀释、经洗涤后得漂白浆。

The experimental result shows that under the condition of lixiviating time being 2.5~3 hours, lixiviating temperature being 110℃, sulphuric acid thickness being 6 mol/L, hydrochloric acid thickness being 3 mol/L, liquid-to-solid quality ratio being 4∶1, the extraction rate of iron will reach 95.7%~96.3% in mass fraction.

丁文武 淮海工学院，连云港 222005通过正交实验研究了用盐酸、硫酸、褐铁矿和硅酸钠制备聚硅氯化硫酸铁絮凝剂的工艺条件。实验结果表明，浸取时间为2.5～3 h，浸取温度为110℃，硫酸浓度为6 mol/L，盐酸浓度为3 mol/L，质量液固比为4∶1，铁的浸出率可达95.7%～96.3%。

Highly stabilized mesoporous molecular sieves were synthesized by the hydrothermal method using natural clay and sodium silicate as raw materials and cetyltrimethyl ammonium bromide as a template.

以天然黏土和硅酸钠为原料、十六烷基三甲基溴化铵为模板剂，水热法合成了有序性好的高稳定性介孔分子筛。

The H〓O〓 consumption decreased effectively when both sodium silicate and magnesium sulphate were present in bleach liquor.

硅酸钠和硫酸镁的共同存在能有效降低H〓O〓的实际消耗量。

The best conditions for deinking agent h were: pulping consistency, 10%; pulping temperature, 60 C; pulping time, 20min; no heating preservation; flotation temperature, 60 C; flotation time, 8min; flotation consistency, 0.8%; deinking agent dosage, 0.1%; deinking agent addition point, 30% in pulper and 70% in flotation cell; Na2SiO3 dosage, 3%; EDTA dosage, 0.2%; NaOH dosage, 1%; H2O2 dosage, 2%; Na2SO4 dosage, 1%.

脱墨剂h的最佳脱墨条件为：碎浆浓度，10％；碎浆温度，60℃；碎浆时间，20min；不保温；浮选温度，60℃；浮选时间，8min；浮选浓度，0.8％；脱墨剂h用量，0.2％；脱墨剂加入点，30％加入碎浆机中，70％加入浮选槽中；硅酸钠用量，2％；EDTA用量，0.2％；氢氧化钠用量，1％；过氧化氢用量，2％；硫酸钠用量，1％。

The results indicate that modified layered sodium silicates can improve significantly load-carrying capacity,friction-reducing and anti-wear abilities.

结果表明：经过改性的层状硅酸钠作为润滑添加剂可以显著提高150SN基础油的承载能力和减摩抗磨性能。

The materials are gold mine of low sulfur content, calcine or gold contain abatement. Cyanogens lixiviant is alkaline thiourea, stabilizer is sodium sulphite or sodium silicate, they constitute high stability alkaline thiourea system, and bland oxidizing agent is potassium ferricyanide with moderate electric potential during sunking process.

本发明以低硫含量的金矿、焙砂或含金废料为原料，以碱性硫脲为无毒的代氰浸出剂，以亚硫酸钠或硅酸钠为稳定剂，组成高稳定性碱性硫脲体系，浸出过程中以具有适中电势的铁氰化钾为温和氧化剂。

Based on the literature about desilication at atmosphere pressure and combined the formation of sodium alumino-silicate hydrate with practical condition of desilcation in ZhongZhou branch of CHALCO, the desilication at atmosphere pressure was studied systemly in laboratory.

一段脱硅需要把粗液加热到150℃以上，要耗费大量的热能；并且在加热过程中水合铝硅酸钠容易结晶析出附着在设备表面形成结垢，降低传热系数、影响设备运行周期。

Our factory is specialized in producing various specifications of solid, liquid sodium silicate to Tianjin Soda Plant "Red Triangle" Soda and Beijing Fangshan high-quality quartz sand as raw material, the use of local natural gas as fuel, using energy efficient furnace production of.

我厂专业生产各种规格的固体、液体硅酸钠，以天津碱厂的&红三角&纯碱和北京房山的优质石英砂为原料，利用当地的天燃气为燃料，采用高效节能炉进行生产的。

The effects of the purities in raw materials on the quality of the product and the process conditions controlled are discussed.

研究了用芒硝法泡花碱制备新型无磷洗涤助剂层状结晶二硅酸钠的方法，探讨了原料中主要杂质对产品质量的影响及工艺的控制条件。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。