Carbide slag CS is a typical alkaline solid waste with Ca OH 2 as its main component exhibiting a high capacity for CO 2 mineralization Currently the methods for CS mineralization of CO 2 include direct and indirect mineralization which the initial pH of the reaction system plays a crucial role in the mineralization process In this study we explored the effects
Chemical composition of calcium carbide slag fly ash and cement % Sample Name CaO SiO 2 Al 2 O 3 MgO Fe 2 O 3 TiO 2 SO 3 Na 2 O Calcium Carbide Slag
An investigation on using municipal solid waste incinerator bottom ash MSWI and calcium carbide waste CCW as a part of the cement raw materials was performed Cement raw meals were replaced by 5% and 10% of MSWI and CCW to study properties of the laboratory produced MSWI and CCW cements Chemical composition setting times compressive
Through chemical component analysis the chemical composition of carbide slag is found to be similar to lime putty in which calcium hydroxide Ca OH 2 is the commonly known electric lime and has a gray and white appearance The electric lime discharged into the settling pond through acetylene generator contains a large amount of water
CaC2 crystallizes in the tetragonal I4/mmm space group The structure is three dimensional Ca2 is bonded in a distorted q4 geometry to ten equivalent C1 atoms There are two shorter Å and eight longer Å Ca C bond lengths C1 is bonded in a 2 coordinate geometry to five equivalent Ca2 and one C1 atom The C C bond length is Å
A mixture of calcium carbide residue and coal fly ash with a Ca/ SiO2 Al2O3 ratio of resulted in the highest compressive strength at long curing periods in both pastes and mortars
Krammart et al [6] reported that mortar made from a calcium carbide residue and fly ash mixture had a compressive strength of MPa at 90 days The optimum ratio of calcium carbide residue to fly ash was 30 70 by weight Jaturapitakkul and Roongreung [7] studied mortar containing calcium carbide residue and rice husk ash They found that
The particle size of calcium carbide slag is relatively fine which makes it easy to cause blockages in the cyclone and the cone of the decomposition furnace; that is not conducive to continuous and stable production The greater is the amount of calcium carbide slag added the greater is the impact on the preheater decomposition furnace 5
Chemical Composition and Properties Calcium carbide is a grayish white crystalline solid with a garlic like odor It is produced through the reaction of quicklime calcium oxide and carbon in an electric arc furnace The resulting product calcium carbide is a hard and brittle material that reacts vigorously with water producing acetylene
Calcium Carbide Residue CCR a by product of acetylene C 2 H 2 production The chemical composition of soil and CCR were analyzed by X ray Fluorescence XRF as shown in Table 1 indicates that FLS consisted mainly of SiO 2 and Al 2 O 3 with some impurities with the sum of SiO 2 Al 2 O 3 and Fe 2 O 3 of %
Oxide composition % Ground low calcium fly ash Ground calcium carbide residue; Silicon dioxide SiO 2 Aluminum oxide Al 2 O 3 Ferric oxide Fe 2 O 3 Calcium oxide CaO Sulfur trioxide SO 3 The calcium carbide had a relatively high moisture content which required it to be dried
Calcium carbide slag CCS a bulk solid waste byproduct of the energy industry This paper introduced an innovative ultra high pressure contact forming technology that utilizes 100 % CCS under high pressure conditions ranging from 100 to 400 MPa investigated the effects of pressing pressure and curing conditions on the comprehensive performance of the resulting
By comparison calcium carbide slag and sintered red mud still showed superior carbon sequestration capacity which was higher than fly ash and Bayer red mud From the experiment we came to realize that adjusting the composition of cementitious materials could realize the carbon sequestration of cement based materials and promote the road
The calcium carbide slag CCR is a highly alkali carrying pH > 12 residue of the production of acetylene because it mainly contains Ca Table 1 describes the percentage by weight of the principal chemical composition of materials as determined by X ray fluorescence It shows that the silica and alumina content in the WRBP and SF accounts
Keywords Calcium carbide x ray diffraction x ray fluorescence diffractometer d spacing portlandite calcite rutile I INTRODUCTION Calcium carbide is a chemical compound with the formula CaC 2 It is widely used in the production of acetelyne and calcium cyanamide which is used as a fertilizer [1]
It is shown that calcium carbide positively affects the chemical composition of steel and the process of formation of nonmetallic inclusions and leads to the modification of corundum inclusions and their globularization in the initial stages of steelmaking The favorable shape of the inclusions formed in the initial stages of the out of
Calcium carbide CaC2 is manufactured by heating a lime and carbon mixture to 2000 to 2100°C 3632 to 3812°F in an electric arc furnace At those temperatures the lime is reduced by The composition of the PM varies according to the specific 1/95 Mineral Products Industry 1 Figure 1 Process flow diagram for calcium carbide
Carbon fixation performance and mechanism of composite modification of steel slag using acids coordinated with calcium carbide residue Author links open overlay panel Xinyu Wang a Qiwei Zhan a Xuan Zhang a Yiming Ge b Juanlan Zhou a Show more To further obtain the chemical composition of SS and CCR energy dispersive X ray
The Ca element mainly represents the calcium carbide slag composition Al mainly represents the aluminum ash composition C mainly represents organic matter impurities and Si mainly represents SiO 2 impurities It can be seen that with the gradual increase of calcium carbide slag addition the content of Al is gradually reduced and the content
A mixture of calcium carbide residue and coal y ash with a Ca/ SiO 2 Al 2 O 3 ratio of resulted in the highest compressive strength at long curing periods in both pastes and mortars
