QUICKLIME
CALCIUM OXIDE
CAS: 73018-51-6
Molecular Formula: CaO
QUICKLIME - Names and Identifiers
| Name | CALCIUM OXIDE |
| Synonyms | CALX CAUSTIC QUICKLIME LIME OXIDE BURNT LIME FLUXING LIME LIME, CAUSTIC CALCIUM OXIDE CALCIUM (II) OXIDE |
| CAS | 73018-51-6 |
| EINECS | 277-225-8 |
QUICKLIME - Physico-chemical Properties
| Molecular Formula | CaO |
| Molar Mass | 56.08 |
| Density | 3.3g/mLat 25°C(lit.) |
| Melting Point | 2570 °C |
| Boling Point | 2850°C(lit.) |
| Water Solubility | 3.25-540mg/L at 20℃ |
| Vapor Presure | 3.68hPa at 20℃ |
| Appearance | powder |
| Physical and Chemical Properties | White or gray-white block or powder, odorless, the main component is calcium oxide, easy to absorb water, after adding water to become calcium hydroxide, commonly known as hydrated lime or slaked lime. Slaked lime is a strong alkali, strong hygroscopicity, absorption of carbon dioxide in the air into hard calcium carbonate lost Disinfection of the role. |
QUICKLIME - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | 34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| WGK Germany | 1 |
| RTECS | EW3100000 |
| FLUKA BRAND F CODES | 10-21-34 |
QUICKLIME - Study on the effect of fly ash and lime on the dewatering of sewage sludge
from Baidu library
Author:
yang bin , yang jiakuan , Tang Yi , Xie Yongzhong , Xiao Bo
Summary:
Through the determination of specific resistance and moisture content of mud cake, the sludge dewatered fly ash (containing coarse and fine) and quicklime dosing experiments were carried out. Separate dosing experiments show that when the dosage is 10g/100mL, fine fly ash (under 0.075mm sieve) can reduce the specific resistance by 91.8%, and the effect is slightly lower than that of quicklime. And fine fly ash has the best effect on reducing the moisture content of mud cake. Combined and separate dosing comparative experiments show that when the dosage is 10g/100mL, the combined dosing of fly ash and quicklime at a 1:1 (mass ratio) reduces the specific resistance by up to 99.8%, which is better than that of both dosing alone. However, the effect of combined dosing to reduce the moisture content of mud cake is not as good as that of single dosing of fly ash, which is only equivalent to that of quicklime.
keywords:
fly ash quicklime sludge specific resistance mud cake moisture content
DOI:
10.3969/j.issn.1003-6504.2007.04.035
cited:
Year:
2007
Last Update：2024-01-02 23:10:35
QUICKLIME - Study on the change law of water content in the treatment of high water content dredging sludge with quicklime
From HowNet
Author:
Zhang Tiejun , Ding Jianwen , Deng Dongsheng ,< a href =" https://xueshu.baidu.com/s?wd=author: (Hong Zhenshun) & tn = SE_baiduxueshu_c1gjeupa & ie = utf-8 & SC _f_para = SC _hilight = person "target ="_blank "> Hong Zhenshun
Summary:
through a large number of indoor tests, the water content change law of loose soil mixed with high water content dredged sludge and quicklime was studied. Introducing the concept of water content reduction rate, it is concluded that the change of water content reduction rate of treated soil with ash doping ratio has nothing to do with the initial water content of the original mud, and the water content reduction rate increases linearly with the increase of ash doping ratio. According to the variation law of water content, a simple and practical prediction method of water content of treated soil is proposed. The experimental data of the existing literature are used to verify the validity of the proposed change law and prediction method of the water content of the treated soil.
keywords:
dredged sludge treated soil high water content water content reduction rate prediction method
DOI:
10.3969/j.issn.1000-7598.2009.09.040
cited:
Year:
2009
Last Update：2023-08-16 22:09:50
QUICKLIME - Effects of lime application on soil enzyme activities and soybean yield
From Wanfang
Author:
Li Zhaolin , Zhao Min , Wang Jianguo , pan xiangwen , Chen Yuan ,< a href = "https://xueshu.baidu.com/s?wd=author: (Ding Xiwu) & tn = SE_baiduxueshu_c1gjeupa & ie = utf-8 & SC _f_para = SC _hilight = person" target = "_blank"> Ding Xiwu
Summary:
Preliminary studies on the effects of quicklime application on soil enzyme activity and soybean yield showed that acid phosphatase and invertase activities were inhibited with the weakening of soil acidity during each growth period of soybean, while urease and catalase activities were enhanced. Soybean yield showed a trend of increasing with the increase of quicklime application amount, and the yield of each treatment increased by 1.0% ~ 9.5% compared with the control. The correlation analysis between soil enzyme activity and soybean yield shows that soil enzyme activity is improved after acidic soil improvement. Planting soybean on acidic soil and fertilizing with a certain amount of quicklime have a good promotion effect on improving soil fertility and increasing soybean yield, but the application amount in actual production should be determined according to specific conditions. Figure 5, Table 3, Ref. 16.
keywords:
quicklime soil enzyme activity soybean yield
DOI:
CNKI:SUN:NXTZ. 0.2008-04-021
cited:
Year:
2008
Last Update：2023-08-16 22:09:50
QUICKLIME - Reference Information
| LogP | 3.3-4.9 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
Last Update：2024-04-09 20:44:15
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